19945640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{317}}^1$

素因数の和:363

約数の個数: 96

約数和(自身を含む): 53290440

約数和(自身を除く): 33344800

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 121, 130, 143, 220, 242, 260, 286, 317, 440, 484, 520, 572, 605, 634, 715, 968, 1144, 1210, 1268, 1430, 1573, 1585, 2420, 2536, 2860, 3146, 3170, 3487, 4121, 4840, 5720, 6292, 6340, 6974, 7865, 8242, 12584, 12680, 13948, 15730, 16484, 17435, 20605, 27896, 31460, 32968, 34870, 38357, 41210, 45331, 62920, 69740, 76714, 82420, 90662, 139480, 153428, 164840, 181324, 191785, 226655, 306856, 362648, 383570, 453310, 498641, 767140, 906620, 997282, 1534280, 1813240, 1994564, 2493205, 3989128, 4986410, 9972820, 19945640]

約数ペア:

[(1, 19945640), (2, 9972820), (4, 4986410), (5, 3989128), (8, 2493205), (10, 1994564), (11, 1813240), (13, 1534280), (20, 997282), (22, 906620), (26, 767140), (40, 498641), (44, 453310), (52, 383570), (55, 362648), (65, 306856), (88, 226655), (104, 191785), (110, 181324), (121, 164840), (130, 153428), (143, 139480), (220, 90662), (242, 82420), (260, 76714), (286, 69740), (317, 62920), (440, 45331), (484, 41210), (520, 38357), (572, 34870), (605, 32968), (634, 31460), (715, 27896), (968, 20605), (1144, 17435), (1210, 16484), (1268, 15730), (1430, 13948), (1573, 12680), (1585, 12584), (2420, 8242), (2536, 7865), (2860, 6974), (3146, 6340), (3170, 6292), (3487, 5720), (4121, 4840)]