18441220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{839}}^1$

素因数の和:1012

約数の個数: 48

約数和(自身を含む): 44593920

約数和(自身を除く): 26152700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 839, 1099, 1570, 1678, 2198, 3140, 3356, 4195, 4396, 5495, 5873, 8390, 10990, 11746, 16780, 21980, 23492, 29365, 58730, 117460, 131723, 263446, 526892, 658615, 922061, 1317230, 1844122, 2634460, 3688244, 4610305, 9220610, 18441220]

約数ペア:

[(1, 18441220), (2, 9220610), (4, 4610305), (5, 3688244), (7, 2634460), (10, 1844122), (14, 1317230), (20, 922061), (28, 658615), (35, 526892), (70, 263446), (140, 131723), (157, 117460), (314, 58730), (628, 29365), (785, 23492), (839, 21980), (1099, 16780), (1570, 11746), (1678, 10990), (2198, 8390), (3140, 5873), (3356, 5495), (4195, 4396)]