90720140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{4349}}^1$

素因数の和:4514

約数の個数: 48

約数和(自身を含む): 219240000

約数和(自身を除く): 128519860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 1043, 1490, 2086, 2980, 4172, 4349, 5215, 8698, 10430, 17396, 20860, 21745, 30443, 43490, 60886, 86980, 121772, 152215, 304430, 608860, 648001, 1296002, 2592004, 3240005, 4536007, 6480010, 9072014, 12960020, 18144028, 22680035, 45360070, 90720140]

約数ペア:

[(1, 90720140), (2, 45360070), (4, 22680035), (5, 18144028), (7, 12960020), (10, 9072014), (14, 6480010), (20, 4536007), (28, 3240005), (35, 2592004), (70, 1296002), (140, 648001), (149, 608860), (298, 304430), (596, 152215), (745, 121772), (1043, 86980), (1490, 60886), (2086, 43490), (2980, 30443), (4172, 21745), (4349, 20860), (5215, 17396), (8698, 10430)]