78317380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{641}}^1$

素因数の和:840

約数の個数: 48

約数和(自身を含む): 169873200

約数和(自身を除く): 91555820

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 149, 164, 205, 298, 410, 596, 641, 745, 820, 1282, 1490, 2564, 2980, 3205, 6109, 6410, 12218, 12820, 24436, 26281, 30545, 52562, 61090, 95509, 105124, 122180, 131405, 191018, 262810, 382036, 477545, 525620, 955090, 1910180, 3915869, 7831738, 15663476, 19579345, 39158690, 78317380]

約数ペア:

[(1, 78317380), (2, 39158690), (4, 19579345), (5, 15663476), (10, 7831738), (20, 3915869), (41, 1910180), (82, 955090), (149, 525620), (164, 477545), (205, 382036), (298, 262810), (410, 191018), (596, 131405), (641, 122180), (745, 105124), (820, 95509), (1282, 61090), (1490, 52562), (2564, 30545), (2980, 26281), (3205, 24436), (6109, 12820), (6410, 12218)]