858482020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{19609}}^1$

素因数の和:19828

約数の個数: 48

約数和(自身を含む): 1976688000

約数和(自身を除く): 1118205980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 199, 220, 398, 796, 995, 1990, 2189, 3980, 4378, 8756, 10945, 19609, 21890, 39218, 43780, 78436, 98045, 196090, 215699, 392180, 431398, 862796, 1078495, 2156990, 3902191, 4313980, 7804382, 15608764, 19510955, 39021910, 42924101, 78043820, 85848202, 171696404, 214620505, 429241010, 858482020]

約数ペア:

[(1, 858482020), (2, 429241010), (4, 214620505), (5, 171696404), (10, 85848202), (11, 78043820), (20, 42924101), (22, 39021910), (44, 19510955), (55, 15608764), (110, 7804382), (199, 4313980), (220, 3902191), (398, 2156990), (796, 1078495), (995, 862796), (1990, 431398), (2189, 392180), (3980, 215699), (4378, 196090), (8756, 98045), (10945, 78436), (19609, 43780), (21890, 39218)]