20011560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:231

約数の個数: 128

約数和(自身を含む): 64627200

約数和(自身を除く): 44615640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 67, 76, 95, 114, 120, 131, 134, 152, 190, 201, 228, 262, 268, 285, 335, 380, 393, 402, 456, 524, 536, 570, 655, 670, 760, 786, 804, 1005, 1048, 1140, 1273, 1310, 1340, 1572, 1608, 1965, 2010, 2280, 2489, 2546, 2620, 2680, 3144, 3819, 3930, 4020, 4978, 5092, 5240, 6365, 7467, 7638, 7860, 8040, 8777, 9956, 10184, 12445, 12730, 14934, 15276, 15720, 17554, 19095, 19912, 24890, 25460, 26331, 29868, 30552, 35108, 37335, 38190, 43885, 49780, 50920, 52662, 59736, 70216, 74670, 76380, 87770, 99560, 105324, 131655, 149340, 152760, 166763, 175540, 210648, 263310, 298680, 333526, 351080, 500289, 526620, 667052, 833815, 1000578, 1053240, 1334104, 1667630, 2001156, 2501445, 3335260, 4002312, 5002890, 6670520, 10005780, 20011560]

約数ペア:

[(1, 20011560), (2, 10005780), (3, 6670520), (4, 5002890), (5, 4002312), (6, 3335260), (8, 2501445), (10, 2001156), (12, 1667630), (15, 1334104), (19, 1053240), (20, 1000578), (24, 833815), (30, 667052), (38, 526620), (40, 500289), (57, 351080), (60, 333526), (67, 298680), (76, 263310), (95, 210648), (114, 175540), (120, 166763), (131, 152760), (134, 149340), (152, 131655), (190, 105324), (201, 99560), (228, 87770), (262, 76380), (268, 74670), (285, 70216), (335, 59736), (380, 52662), (393, 50920), (402, 49780), (456, 43885), (524, 38190), (536, 37335), (570, 35108), (655, 30552), (670, 29868), (760, 26331), (786, 25460), (804, 24890), (1005, 19912), (1048, 19095), (1140, 17554), (1273, 15720), (1310, 15276), (1340, 14934), (1572, 12730), (1608, 12445), (1965, 10184), (2010, 9956), (2280, 8777), (2489, 8040), (2546, 7860), (2620, 7638), (2680, 7467), (3144, 6365), (3819, 5240), (3930, 5092), (4020, 4978)]