21266960

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^3$

素因数の和:74

約数の個数: 120

約数和(自身を含む): 58876440

約数和(自身を除く): 37609480

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 121, 130, 143, 169, 176, 208, 220, 242, 260, 286, 338, 440, 484, 520, 572, 605, 676, 715, 845, 880, 968, 1040, 1144, 1210, 1352, 1430, 1573, 1690, 1859, 1936, 2197, 2288, 2420, 2704, 2860, 3146, 3380, 3718, 4394, 4840, 5720, 6292, 6760, 7436, 7865, 8788, 9295, 9680, 10985, 11440, 12584, 13520, 14872, 15730, 17576, 18590, 20449, 21970, 24167, 25168, 29744, 31460, 35152, 37180, 40898, 43940, 48334, 62920, 74360, 81796, 87880, 96668, 102245, 120835, 125840, 148720, 163592, 175760, 193336, 204490, 241670, 265837, 327184, 386672, 408980, 483340, 531674, 817960, 966680, 1063348, 1329185, 1635920, 1933360, 2126696, 2658370, 4253392, 5316740, 10633480, 21266960]

約数ペア:

[(1, 21266960), (2, 10633480), (4, 5316740), (5, 4253392), (8, 2658370), (10, 2126696), (11, 1933360), (13, 1635920), (16, 1329185), (20, 1063348), (22, 966680), (26, 817960), (40, 531674), (44, 483340), (52, 408980), (55, 386672), (65, 327184), (80, 265837), (88, 241670), (104, 204490), (110, 193336), (121, 175760), (130, 163592), (143, 148720), (169, 125840), (176, 120835), (208, 102245), (220, 96668), (242, 87880), (260, 81796), (286, 74360), (338, 62920), (440, 48334), (484, 43940), (520, 40898), (572, 37180), (605, 35152), (676, 31460), (715, 29744), (845, 25168), (880, 24167), (968, 21970), (1040, 20449), (1144, 18590), (1210, 17576), (1352, 15730), (1430, 14872), (1573, 13520), (1690, 12584), (1859, 11440), (1936, 10985), (2197, 9680), (2288, 9295), (2420, 8788), (2704, 7865), (2860, 7436), (3146, 6760), (3380, 6292), (3718, 5720), (4394, 4840)]