38913980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1163}}^1$

素因数の和:1418

約数の個数: 48

約数和(自身を含む): 93864960

約数和(自身を除く): 54950980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 478, 956, 1163, 1195, 1673, 2326, 2390, 3346, 4652, 4780, 5815, 6692, 8141, 8365, 11630, 16282, 16730, 23260, 32564, 33460, 40705, 81410, 162820, 277957, 555914, 1111828, 1389785, 1945699, 2779570, 3891398, 5559140, 7782796, 9728495, 19456990, 38913980]

約数ペア:

[(1, 38913980), (2, 19456990), (4, 9728495), (5, 7782796), (7, 5559140), (10, 3891398), (14, 2779570), (20, 1945699), (28, 1389785), (35, 1111828), (70, 555914), (140, 277957), (239, 162820), (478, 81410), (956, 40705), (1163, 33460), (1195, 32564), (1673, 23260), (2326, 16730), (2390, 16282), (3346, 11630), (4652, 8365), (4780, 8141), (5815, 6692)]