31980000

素因数分解:

$2^5\times 3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1$

素因数の和:87

約数の個数: 240

約数和(自身を含む): 115725456

約数和(自身を除く): 83745456

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 25, 26, 30, 32, 39, 40, 41, 48, 50, 52, 60, 65, 75, 78, 80, 82, 96, 100, 104, 120, 123, 125, 130, 150, 156, 160, 164, 195, 200, 205, 208, 240, 246, 250, 260, 300, 312, 325, 328, 375, 390, 400, 410, 416, 480, 492, 500, 520, 533, 600, 615, 624, 625, 650, 656, 750, 780, 800, 820, 975, 984, 1000, 1025, 1040, 1066, 1200, 1230, 1248, 1250, 1300, 1312, 1500, 1560, 1599, 1625, 1640, 1875, 1950, 1968, 2000, 2050, 2080, 2132, 2400, 2460, 2500, 2600, 2665, 3000, 3075, 3120, 3198, 3250, 3280, 3750, 3900, 3936, 4000, 4100, 4264, 4875, 4920, 5000, 5125, 5200, 5330, 6000, 6150, 6240, 6396, 6500, 6560, 7500, 7800, 7995, 8125, 8200, 8528, 9750, 9840, 10000, 10250, 10400, 10660, 12000, 12300, 12792, 13000, 13325, 15000, 15375, 15600, 15990, 16250, 16400, 17056, 19500, 19680, 20000, 20500, 21320, 24375, 24600, 25584, 25625, 26000, 26650, 30000, 30750, 31200, 31980, 32500, 32800, 39000, 39975, 41000, 42640, 48750, 49200, 51168, 51250, 52000, 53300, 60000, 61500, 63960, 65000, 66625, 76875, 78000, 79950, 82000, 85280, 97500, 98400, 102500, 106600, 123000, 127920, 130000, 133250, 153750, 156000, 159900, 164000, 195000, 199875, 205000, 213200, 246000, 255840, 260000, 266500, 307500, 319800, 333125, 390000, 399750, 410000, 426400, 492000, 533000, 615000, 639600, 666250, 780000, 799500, 820000, 999375, 1066000, 1230000, 1279200, 1332500, 1599000, 1998750, 2132000, 2460000, 2665000, 3198000, 3997500, 5330000, 6396000, 7995000, 10660000, 15990000, 31980000]

約数ペア:

[(1, 31980000), (2, 15990000), (3, 10660000), (4, 7995000), (5, 6396000), (6, 5330000), (8, 3997500), (10, 3198000), (12, 2665000), (13, 2460000), (15, 2132000), (16, 1998750), (20, 1599000), (24, 1332500), (25, 1279200), (26, 1230000), (30, 1066000), (32, 999375), (39, 820000), (40, 799500), (41, 780000), (48, 666250), (50, 639600), (52, 615000), (60, 533000), (65, 492000), (75, 426400), (78, 410000), (80, 399750), (82, 390000), (96, 333125), (100, 319800), (104, 307500), (120, 266500), (123, 260000), (125, 255840), (130, 246000), (150, 213200), (156, 205000), (160, 199875), (164, 195000), (195, 164000), (200, 159900), (205, 156000), (208, 153750), (240, 133250), (246, 130000), (250, 127920), (260, 123000), (300, 106600), (312, 102500), (325, 98400), (328, 97500), (375, 85280), (390, 82000), (400, 79950), (410, 78000), (416, 76875), (480, 66625), (492, 65000), (500, 63960), (520, 61500), (533, 60000), (600, 53300), (615, 52000), (624, 51250), (625, 51168), (650, 49200), (656, 48750), (750, 42640), (780, 41000), (800, 39975), (820, 39000), (975, 32800), (984, 32500), (1000, 31980), (1025, 31200), (1040, 30750), (1066, 30000), (1200, 26650), (1230, 26000), (1248, 25625), (1250, 25584), (1300, 24600), (1312, 24375), (1500, 21320), (1560, 20500), (1599, 20000), (1625, 19680), (1640, 19500), (1875, 17056), (1950, 16400), (1968, 16250), (2000, 15990), (2050, 15600), (2080, 15375), (2132, 15000), (2400, 13325), (2460, 13000), (2500, 12792), (2600, 12300), (2665, 12000), (3000, 10660), (3075, 10400), (3120, 10250), (3198, 10000), (3250, 9840), (3280, 9750), (3750, 8528), (3900, 8200), (3936, 8125), (4000, 7995), (4100, 7800), (4264, 7500), (4875, 6560), (4920, 6500), (5000, 6396), (5125, 6240), (5200, 6150), (5330, 6000)]