81560560

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59971}}^1$

素因数の和:60001

約数の個数: 40

約数和(自身を含む): 200786256

約数和(自身を除く): 119225696

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 59971, 119942, 239884, 299855, 479768, 599710, 959536, 1019507, 1199420, 2039014, 2398840, 4078028, 4797680, 5097535, 8156056, 10195070, 16312112, 20390140, 40780280, 81560560]

約数ペア:

[(1, 81560560), (2, 40780280), (4, 20390140), (5, 16312112), (8, 10195070), (10, 8156056), (16, 5097535), (17, 4797680), (20, 4078028), (34, 2398840), (40, 2039014), (68, 1199420), (80, 1019507), (85, 959536), (136, 599710), (170, 479768), (272, 299855), (340, 239884), (680, 119942), (1360, 59971)]