20813688

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{677}}^1$

素因数の和:757

約数の個数: 96

約数和(自身を含む): 65576160

約数和(自身を除く): 44762472

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 56, 61, 63, 72, 84, 122, 126, 168, 183, 244, 252, 366, 427, 488, 504, 549, 677, 732, 854, 1098, 1281, 1354, 1464, 1708, 2031, 2196, 2562, 2708, 3416, 3843, 4062, 4392, 4739, 5124, 5416, 6093, 7686, 8124, 9478, 10248, 12186, 14217, 15372, 16248, 18956, 24372, 28434, 30744, 37912, 41297, 42651, 48744, 56868, 82594, 85302, 113736, 123891, 165188, 170604, 247782, 289079, 330376, 341208, 371673, 495564, 578158, 743346, 867237, 991128, 1156316, 1486692, 1734474, 2312632, 2601711, 2973384, 3468948, 5203422, 6937896, 10406844, 20813688]

約数ペア:

[(1, 20813688), (2, 10406844), (3, 6937896), (4, 5203422), (6, 3468948), (7, 2973384), (8, 2601711), (9, 2312632), (12, 1734474), (14, 1486692), (18, 1156316), (21, 991128), (24, 867237), (28, 743346), (36, 578158), (42, 495564), (56, 371673), (61, 341208), (63, 330376), (72, 289079), (84, 247782), (122, 170604), (126, 165188), (168, 123891), (183, 113736), (244, 85302), (252, 82594), (366, 56868), (427, 48744), (488, 42651), (504, 41297), (549, 37912), (677, 30744), (732, 28434), (854, 24372), (1098, 18956), (1281, 16248), (1354, 15372), (1464, 14217), (1708, 12186), (2031, 10248), (2196, 9478), (2562, 8124), (2708, 7686), (3416, 6093), (3843, 5416), (4062, 5124), (4392, 4739)]