18214820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{317}}^1$

素因数の和:369

約数の個数: 72

約数和(自身を含む): 43994664

約数和(自身を除く): 25779844

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 169, 170, 221, 260, 317, 338, 340, 442, 634, 676, 845, 884, 1105, 1268, 1585, 1690, 2210, 2873, 3170, 3380, 4121, 4420, 5389, 5746, 6340, 8242, 10778, 11492, 14365, 16484, 20605, 21556, 26945, 28730, 41210, 53573, 53890, 57460, 70057, 82420, 107146, 107780, 140114, 214292, 267865, 280228, 350285, 535730, 700570, 910741, 1071460, 1401140, 1821482, 3642964, 4553705, 9107410, 18214820]

約数ペア:

[(1, 18214820), (2, 9107410), (4, 4553705), (5, 3642964), (10, 1821482), (13, 1401140), (17, 1071460), (20, 910741), (26, 700570), (34, 535730), (52, 350285), (65, 280228), (68, 267865), (85, 214292), (130, 140114), (169, 107780), (170, 107146), (221, 82420), (260, 70057), (317, 57460), (338, 53890), (340, 53573), (442, 41210), (634, 28730), (676, 26945), (845, 21556), (884, 20605), (1105, 16484), (1268, 14365), (1585, 11492), (1690, 10778), (2210, 8242), (2873, 6340), (3170, 5746), (3380, 5389), (4121, 4420)]