161980000

素因数分解:

$2^5\times 5^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1$

素因数の和:139

約数の個数: 240

約数和(自身を含む): 495966240

約数和(自身を除く): 333986240

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 25, 26, 28, 32, 35, 40, 50, 52, 56, 65, 70, 80, 89, 91, 100, 104, 112, 125, 130, 140, 160, 175, 178, 182, 200, 208, 224, 250, 260, 280, 325, 350, 356, 364, 400, 416, 445, 455, 500, 520, 560, 623, 625, 650, 700, 712, 728, 800, 875, 890, 910, 1000, 1040, 1120, 1157, 1246, 1250, 1300, 1400, 1424, 1456, 1625, 1750, 1780, 1820, 2000, 2080, 2225, 2275, 2314, 2492, 2500, 2600, 2800, 2848, 2912, 3115, 3250, 3500, 3560, 3640, 4000, 4375, 4450, 4550, 4628, 4984, 5000, 5200, 5600, 5785, 6230, 6500, 7000, 7120, 7280, 8099, 8125, 8750, 8900, 9100, 9256, 9968, 10000, 10400, 11125, 11375, 11570, 12460, 13000, 14000, 14240, 14560, 15575, 16198, 16250, 17500, 17800, 18200, 18512, 19936, 20000, 22250, 22750, 23140, 24920, 26000, 28000, 28925, 31150, 32396, 32500, 35000, 35600, 36400, 37024, 40495, 44500, 45500, 46280, 49840, 52000, 55625, 56875, 57850, 62300, 64792, 65000, 70000, 71200, 72800, 77875, 80990, 89000, 91000, 92560, 99680, 111250, 113750, 115700, 124600, 129584, 130000, 140000, 144625, 155750, 161980, 178000, 182000, 185120, 202475, 222500, 227500, 231400, 249200, 259168, 260000, 289250, 311500, 323960, 356000, 364000, 389375, 404950, 445000, 455000, 462800, 498400, 578500, 623000, 647920, 723125, 778750, 809900, 890000, 910000, 925600, 1012375, 1157000, 1246000, 1295840, 1446250, 1557500, 1619800, 1780000, 1820000, 2024750, 2314000, 2492000, 2892500, 3115000, 3239600, 4049500, 4628000, 5061875, 5785000, 6230000, 6479200, 8099000, 10123750, 11570000, 12460000, 16198000, 20247500, 23140000, 32396000, 40495000, 80990000, 161980000]

約数ペア:

[(1, 161980000), (2, 80990000), (4, 40495000), (5, 32396000), (7, 23140000), (8, 20247500), (10, 16198000), (13, 12460000), (14, 11570000), (16, 10123750), (20, 8099000), (25, 6479200), (26, 6230000), (28, 5785000), (32, 5061875), (35, 4628000), (40, 4049500), (50, 3239600), (52, 3115000), (56, 2892500), (65, 2492000), (70, 2314000), (80, 2024750), (89, 1820000), (91, 1780000), (100, 1619800), (104, 1557500), (112, 1446250), (125, 1295840), (130, 1246000), (140, 1157000), (160, 1012375), (175, 925600), (178, 910000), (182, 890000), (200, 809900), (208, 778750), (224, 723125), (250, 647920), (260, 623000), (280, 578500), (325, 498400), (350, 462800), (356, 455000), (364, 445000), (400, 404950), (416, 389375), (445, 364000), (455, 356000), (500, 323960), (520, 311500), (560, 289250), (623, 260000), (625, 259168), (650, 249200), (700, 231400), (712, 227500), (728, 222500), (800, 202475), (875, 185120), (890, 182000), (910, 178000), (1000, 161980), (1040, 155750), (1120, 144625), (1157, 140000), (1246, 130000), (1250, 129584), (1300, 124600), (1400, 115700), (1424, 113750), (1456, 111250), (1625, 99680), (1750, 92560), (1780, 91000), (1820, 89000), (2000, 80990), (2080, 77875), (2225, 72800), (2275, 71200), (2314, 70000), (2492, 65000), (2500, 64792), (2600, 62300), (2800, 57850), (2848, 56875), (2912, 55625), (3115, 52000), (3250, 49840), (3500, 46280), (3560, 45500), (3640, 44500), (4000, 40495), (4375, 37024), (4450, 36400), (4550, 35600), (4628, 35000), (4984, 32500), (5000, 32396), (5200, 31150), (5600, 28925), (5785, 28000), (6230, 26000), (6500, 24920), (7000, 23140), (7120, 22750), (7280, 22250), (8099, 20000), (8125, 19936), (8750, 18512), (8900, 18200), (9100, 17800), (9256, 17500), (9968, 16250), (10000, 16198), (10400, 15575), (11125, 14560), (11375, 14240), (11570, 14000), (12460, 13000)]