18501868

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 41947136

約数和(自身を除く): 23445268

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 43, 44, 77, 86, 121, 127, 154, 172, 242, 254, 301, 308, 473, 484, 508, 602, 847, 889, 946, 1204, 1397, 1694, 1778, 1892, 2794, 3311, 3388, 3556, 5203, 5461, 5588, 6622, 9779, 10406, 10922, 13244, 15367, 19558, 20812, 21844, 30734, 36421, 38227, 39116, 60071, 61468, 72842, 76454, 107569, 120142, 145684, 152908, 215138, 240284, 420497, 430276, 660781, 840994, 1321562, 1681988, 2643124, 4625467, 9250934, 18501868]

約数ペア:

[(1, 18501868), (2, 9250934), (4, 4625467), (7, 2643124), (11, 1681988), (14, 1321562), (22, 840994), (28, 660781), (43, 430276), (44, 420497), (77, 240284), (86, 215138), (121, 152908), (127, 145684), (154, 120142), (172, 107569), (242, 76454), (254, 72842), (301, 61468), (308, 60071), (473, 39116), (484, 38227), (508, 36421), (602, 30734), (847, 21844), (889, 20812), (946, 19558), (1204, 15367), (1397, 13244), (1694, 10922), (1778, 10406), (1892, 9779), (2794, 6622), (3311, 5588), (3388, 5461), (3556, 5203)]