20774940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:251

約数の個数: 96

約数和(自身を含む): 60963840

約数和(自身を除く): 40188900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 47, 53, 60, 94, 106, 139, 141, 159, 188, 212, 235, 265, 278, 282, 318, 417, 470, 530, 556, 564, 636, 695, 705, 795, 834, 940, 1060, 1390, 1410, 1590, 1668, 2085, 2491, 2780, 2820, 3180, 4170, 4982, 6533, 7367, 7473, 8340, 9964, 12455, 13066, 14734, 14946, 19599, 22101, 24910, 26132, 29468, 29892, 32665, 36835, 37365, 39198, 44202, 49820, 65330, 73670, 74730, 78396, 88404, 97995, 110505, 130660, 147340, 149460, 195990, 221010, 346249, 391980, 442020, 692498, 1038747, 1384996, 1731245, 2077494, 3462490, 4154988, 5193735, 6924980, 10387470, 20774940]

約数ペア:

[(1, 20774940), (2, 10387470), (3, 6924980), (4, 5193735), (5, 4154988), (6, 3462490), (10, 2077494), (12, 1731245), (15, 1384996), (20, 1038747), (30, 692498), (47, 442020), (53, 391980), (60, 346249), (94, 221010), (106, 195990), (139, 149460), (141, 147340), (159, 130660), (188, 110505), (212, 97995), (235, 88404), (265, 78396), (278, 74730), (282, 73670), (318, 65330), (417, 49820), (470, 44202), (530, 39198), (556, 37365), (564, 36835), (636, 32665), (695, 29892), (705, 29468), (795, 26132), (834, 24910), (940, 22101), (1060, 19599), (1390, 14946), (1410, 14734), (1590, 13066), (1668, 12455), (2085, 9964), (2491, 8340), (2780, 7473), (2820, 7367), (3180, 6533), (4170, 4982)]