89991220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{21529}}^1$

素因数の和:21568

約数の個数: 48

約数和(自身を含む): 217022400

約数和(自身を除く): 127031180

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 21529, 43058, 86116, 107645, 215290, 236819, 409051, 430580, 473638, 818102, 947276, 1184095, 1636204, 2045255, 2368190, 4090510, 4499561, 4736380, 8181020, 8999122, 17998244, 22497805, 44995610, 89991220]

約数ペア:

[(1, 89991220), (2, 44995610), (4, 22497805), (5, 17998244), (10, 8999122), (11, 8181020), (19, 4736380), (20, 4499561), (22, 4090510), (38, 2368190), (44, 2045255), (55, 1636204), (76, 1184095), (95, 947276), (110, 818102), (190, 473638), (209, 430580), (220, 409051), (380, 236819), (418, 215290), (836, 107645), (1045, 86116), (2090, 43058), (4180, 21529)]