20154672020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2027633}}^1$

素因数の和:2027720

約数の個数: 48

約数和(自身を含む): 49052521728

約数和(自身を除く): 28897849708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 2027633, 4055266, 8110532, 10138165, 14193431, 20276330, 28386862, 40552660, 56773724, 70967155, 141934310, 143961943, 283868620, 287923886, 575847772, 719809715, 1007733601, 1439619430, 2015467202, 2879238860, 4030934404, 5038668005, 10077336010, 20154672020]

約数ペア:

[(1, 20154672020), (2, 10077336010), (4, 5038668005), (5, 4030934404), (7, 2879238860), (10, 2015467202), (14, 1439619430), (20, 1007733601), (28, 719809715), (35, 575847772), (70, 287923886), (71, 283868620), (140, 143961943), (142, 141934310), (284, 70967155), (355, 56773724), (497, 40552660), (710, 28386862), (994, 20276330), (1420, 14193431), (1988, 10138165), (2485, 8110532), (4970, 4055266), (9940, 2027633)]