86820080

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17791}}^1$

素因数の和:17865

約数の個数: 40

約数和(自身を含む): 205177344

約数和(自身を除く): 118357264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 17791, 35582, 71164, 88955, 142328, 177910, 284656, 355820, 711640, 1085251, 1423280, 2170502, 4341004, 5426255, 8682008, 10852510, 17364016, 21705020, 43410040, 86820080]

約数ペア:

[(1, 86820080), (2, 43410040), (4, 21705020), (5, 17364016), (8, 10852510), (10, 8682008), (16, 5426255), (20, 4341004), (40, 2170502), (61, 1423280), (80, 1085251), (122, 711640), (244, 355820), (305, 284656), (488, 177910), (610, 142328), (976, 88955), (1220, 71164), (2440, 35582), (4880, 17791)]