18218356

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{557}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 37403856

約数和(自身を除く): 19185500

約数列:

[1, 2, 4, 13, 17, 26, 34, 37, 52, 68, 74, 148, 221, 442, 481, 557, 629, 884, 962, 1114, 1258, 1924, 2228, 2516, 7241, 8177, 9469, 14482, 16354, 18938, 20609, 28964, 32708, 37876, 41218, 82436, 123097, 246194, 267917, 350353, 492388, 535834, 700706, 1071668, 1401412, 4554589, 9109178, 18218356]

約数ペア:

[(1, 18218356), (2, 9109178), (4, 4554589), (13, 1401412), (17, 1071668), (26, 700706), (34, 535834), (37, 492388), (52, 350353), (68, 267917), (74, 246194), (148, 123097), (221, 82436), (442, 41218), (481, 37876), (557, 32708), (629, 28964), (884, 20609), (962, 18938), (1114, 16354), (1258, 14482), (1924, 9469), (2228, 8177), (2516, 7241)]