78561740

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{643}}^1$

素因数の和:842

約数の個数: 48

約数和(自身を含む): 170402400

約数和(自身を除く): 91840660

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 149, 164, 205, 298, 410, 596, 643, 745, 820, 1286, 1490, 2572, 2980, 3215, 6109, 6430, 12218, 12860, 24436, 26363, 30545, 52726, 61090, 95807, 105452, 122180, 131815, 191614, 263630, 383228, 479035, 527260, 958070, 1916140, 3928087, 7856174, 15712348, 19640435, 39280870, 78561740]

約数ペア:

[(1, 78561740), (2, 39280870), (4, 19640435), (5, 15712348), (10, 7856174), (20, 3928087), (41, 1916140), (82, 958070), (149, 527260), (164, 479035), (205, 383228), (298, 263630), (410, 191614), (596, 131815), (643, 122180), (745, 105452), (820, 95807), (1286, 61090), (1490, 52726), (2572, 30545), (2980, 26363), (3215, 24436), (6109, 12860), (6430, 12218)]