81836680

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{12251}}^1$

素因数の和:12429

約数の個数: 32

約数和(自身を含む): 185250240

約数和(自身を除く): 103413560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 3340, 6680, 12251, 24502, 49004, 61255, 98008, 122510, 245020, 490040, 2045917, 4091834, 8183668, 10229585, 16367336, 20459170, 40918340, 81836680]

約数ペア:

[(1, 81836680), (2, 40918340), (4, 20459170), (5, 16367336), (8, 10229585), (10, 8183668), (20, 4091834), (40, 2045917), (167, 490040), (334, 245020), (668, 122510), (835, 98008), (1336, 61255), (1670, 49004), (3340, 24502), (6680, 12251)]