15920840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1801}}^1$

素因数の和:1842

約数の個数: 64

約数和(自身を含む): 40869360

約数和(自身を除く): 24948520

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 1801, 2210, 3602, 4420, 7204, 8840, 9005, 14408, 18010, 23413, 30617, 36020, 46826, 61234, 72040, 93652, 117065, 122468, 153085, 187304, 234130, 244936, 306170, 398021, 468260, 612340, 796042, 936520, 1224680, 1592084, 1990105, 3184168, 3980210, 7960420, 15920840]

約数ペア:

[(1, 15920840), (2, 7960420), (4, 3980210), (5, 3184168), (8, 1990105), (10, 1592084), (13, 1224680), (17, 936520), (20, 796042), (26, 612340), (34, 468260), (40, 398021), (52, 306170), (65, 244936), (68, 234130), (85, 187304), (104, 153085), (130, 122468), (136, 117065), (170, 93652), (221, 72040), (260, 61234), (340, 46826), (442, 36020), (520, 30617), (680, 23413), (884, 18010), (1105, 14408), (1768, 9005), (1801, 8840), (2210, 7204), (3602, 4420)]