80990000

素因数分解:

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

素因数の和:137

約数の個数: 200

約数和(自身を含む): 244046880

約数和(自身を除く): 163056880

約数列:

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

約数ペア:

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