20197942640

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{3195877}}^1$

素因数の和:3195969

約数の個数: 40

約数和(自身を含む): 47554664640

約数和(自身を除く): 27356722000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 3195877, 6391754, 12783508, 15979385, 25567016, 31958770, 51134032, 63917540, 127835080, 252474283, 255670160, 504948566, 1009897132, 1262371415, 2019794264, 2524742830, 4039588528, 5049485660, 10098971320, 20197942640]

約数ペア:

[(1, 20197942640), (2, 10098971320), (4, 5049485660), (5, 4039588528), (8, 2524742830), (10, 2019794264), (16, 1262371415), (20, 1009897132), (40, 504948566), (79, 255670160), (80, 252474283), (158, 127835080), (316, 63917540), (395, 51134032), (632, 31958770), (790, 25567016), (1264, 15979385), (1580, 12783508), (3160, 6391754), (6320, 3195877)]