81964140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{751}}^1$

素因数の和:887

約数の個数: 96

約数和(自身を含む): 245597184

約数和(自身を除く): 163633044

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 107, 170, 204, 214, 255, 321, 340, 428, 510, 535, 642, 751, 1020, 1070, 1284, 1502, 1605, 1819, 2140, 2253, 3004, 3210, 3638, 3755, 4506, 5457, 6420, 7276, 7510, 9012, 9095, 10914, 11265, 12767, 15020, 18190, 21828, 22530, 25534, 27285, 36380, 38301, 45060, 51068, 54570, 63835, 76602, 80357, 109140, 127670, 153204, 160714, 191505, 241071, 255340, 321428, 383010, 401785, 482142, 766020, 803570, 964284, 1205355, 1366069, 1607140, 2410710, 2732138, 4098207, 4821420, 5464276, 6830345, 8196414, 13660690, 16392828, 20491035, 27321380, 40982070, 81964140]

約数ペア:

[(1, 81964140), (2, 40982070), (3, 27321380), (4, 20491035), (5, 16392828), (6, 13660690), (10, 8196414), (12, 6830345), (15, 5464276), (17, 4821420), (20, 4098207), (30, 2732138), (34, 2410710), (51, 1607140), (60, 1366069), (68, 1205355), (85, 964284), (102, 803570), (107, 766020), (170, 482142), (204, 401785), (214, 383010), (255, 321428), (321, 255340), (340, 241071), (428, 191505), (510, 160714), (535, 153204), (642, 127670), (751, 109140), (1020, 80357), (1070, 76602), (1284, 63835), (1502, 54570), (1605, 51068), (1819, 45060), (2140, 38301), (2253, 36380), (3004, 27285), (3210, 25534), (3638, 22530), (3755, 21828), (4506, 18190), (5457, 15020), (6420, 12767), (7276, 11265), (7510, 10914), (9012, 9095)]