20126540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{617}}^1$

素因数の和:866

約数の個数: 48

約数和(自身を含む): 48589632

約数和(自身を除く): 28463092

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 233, 466, 617, 932, 1165, 1234, 1631, 2330, 2468, 3085, 3262, 4319, 4660, 6170, 6524, 8155, 8638, 12340, 16310, 17276, 21595, 32620, 43190, 86380, 143761, 287522, 575044, 718805, 1006327, 1437610, 2012654, 2875220, 4025308, 5031635, 10063270, 20126540]

約数ペア:

[(1, 20126540), (2, 10063270), (4, 5031635), (5, 4025308), (7, 2875220), (10, 2012654), (14, 1437610), (20, 1006327), (28, 718805), (35, 575044), (70, 287522), (140, 143761), (233, 86380), (466, 43190), (617, 32620), (932, 21595), (1165, 17276), (1234, 16310), (1631, 12340), (2330, 8638), (2468, 8155), (3085, 6524), (3262, 6170), (4319, 4660)]