20255060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{971}}^1$

素因数の和:1136

約数の個数: 48

約数和(自身を含む): 48988800

約数和(自身を除く): 28733740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 971, 1043, 1490, 1942, 2086, 2980, 3884, 4172, 4855, 5215, 6797, 9710, 10430, 13594, 19420, 20860, 27188, 33985, 67970, 135940, 144679, 289358, 578716, 723395, 1012753, 1446790, 2025506, 2893580, 4051012, 5063765, 10127530, 20255060]

約数ペア:

[(1, 20255060), (2, 10127530), (4, 5063765), (5, 4051012), (7, 2893580), (10, 2025506), (14, 1446790), (20, 1012753), (28, 723395), (35, 578716), (70, 289358), (140, 144679), (149, 135940), (298, 67970), (596, 33985), (745, 27188), (971, 20860), (1043, 19420), (1490, 13594), (1942, 10430), (2086, 9710), (2980, 6797), (3884, 5215), (4172, 4855)]