21237556

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{367}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 42287616

約数和(自身を除く): 21050060

約数列:

[1, 2, 4, 17, 23, 34, 37, 46, 68, 74, 92, 148, 367, 391, 629, 734, 782, 851, 1258, 1468, 1564, 1702, 2516, 3404, 6239, 8441, 12478, 13579, 14467, 16882, 24956, 27158, 28934, 33764, 54316, 57868, 143497, 230843, 286994, 312317, 461686, 573988, 624634, 923372, 1249268, 5309389, 10618778, 21237556]

約数ペア:

[(1, 21237556), (2, 10618778), (4, 5309389), (17, 1249268), (23, 923372), (34, 624634), (37, 573988), (46, 461686), (68, 312317), (74, 286994), (92, 230843), (148, 143497), (367, 57868), (391, 54316), (629, 33764), (734, 28934), (782, 27158), (851, 24956), (1258, 16882), (1468, 14467), (1564, 13579), (1702, 12478), (2516, 8441), (3404, 6239)]