21617060

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{349}}^1$

素因数の和:540

約数の個数: 48

約数和(自身を含む): 48216000

約数和(自身を除く): 26598940

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 163, 190, 326, 349, 380, 652, 698, 815, 1396, 1630, 1745, 3097, 3260, 3490, 6194, 6631, 6980, 12388, 13262, 15485, 26524, 30970, 33155, 56887, 61940, 66310, 113774, 132620, 227548, 284435, 568870, 1080853, 1137740, 2161706, 4323412, 5404265, 10808530, 21617060]

約数ペア:

[(1, 21617060), (2, 10808530), (4, 5404265), (5, 4323412), (10, 2161706), (19, 1137740), (20, 1080853), (38, 568870), (76, 284435), (95, 227548), (163, 132620), (190, 113774), (326, 66310), (349, 61940), (380, 56887), (652, 33155), (698, 30970), (815, 26524), (1396, 15485), (1630, 13262), (1745, 12388), (3097, 6980), (3260, 6631), (3490, 6194)]