18681416

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{683}}^1$

素因数の和:965

約数の個数: 32

約数和(自身を含む): 37920960

約数和(自身を除く): 19239544

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 263, 526, 683, 1052, 1366, 2104, 2732, 3419, 5464, 6838, 8879, 13676, 17758, 27352, 35516, 71032, 179629, 359258, 718516, 1437032, 2335177, 4670354, 9340708, 18681416]

約数ペア:

[(1, 18681416), (2, 9340708), (4, 4670354), (8, 2335177), (13, 1437032), (26, 718516), (52, 359258), (104, 179629), (263, 71032), (526, 35516), (683, 27352), (1052, 17758), (1366, 13676), (2104, 8879), (2732, 6838), (3419, 5464)]