21000540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{677}}^1$

素因数の和:747

約数の個数: 96

約数和(自身を含む): 65608704

約数和(自身を除く): 44608164

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 47, 55, 60, 66, 94, 110, 132, 141, 165, 188, 220, 235, 282, 330, 470, 517, 564, 660, 677, 705, 940, 1034, 1354, 1410, 1551, 2031, 2068, 2585, 2708, 2820, 3102, 3385, 4062, 5170, 6204, 6770, 7447, 7755, 8124, 10155, 10340, 13540, 14894, 15510, 20310, 22341, 29788, 31020, 31819, 37235, 40620, 44682, 63638, 74470, 89364, 95457, 111705, 127276, 148940, 159095, 190914, 223410, 318190, 350009, 381828, 446820, 477285, 636380, 700018, 954570, 1050027, 1400036, 1750045, 1909140, 2100054, 3500090, 4200108, 5250135, 7000180, 10500270, 21000540]

約数ペア:

[(1, 21000540), (2, 10500270), (3, 7000180), (4, 5250135), (5, 4200108), (6, 3500090), (10, 2100054), (11, 1909140), (12, 1750045), (15, 1400036), (20, 1050027), (22, 954570), (30, 700018), (33, 636380), (44, 477285), (47, 446820), (55, 381828), (60, 350009), (66, 318190), (94, 223410), (110, 190914), (132, 159095), (141, 148940), (165, 127276), (188, 111705), (220, 95457), (235, 89364), (282, 74470), (330, 63638), (470, 44682), (517, 40620), (564, 37235), (660, 31819), (677, 31020), (705, 29788), (940, 22341), (1034, 20310), (1354, 15510), (1410, 14894), (1551, 13540), (2031, 10340), (2068, 10155), (2585, 8124), (2708, 7755), (2820, 7447), (3102, 6770), (3385, 6204), (4062, 5170)]