217342020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{517481}}^1$

素因数の和:517500

約数の個数: 48

約数和(自身を含む): 695495808

約数和(自身を除く): 478153788

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 517481, 1034962, 1552443, 2069924, 2587405, 3104886, 3622367, 5174810, 6209772, 7244734, 7762215, 10349620, 10867101, 14489468, 15524430, 18111835, 21734202, 31048860, 36223670, 43468404, 54335505, 72447340, 108671010, 217342020]

約数ペア:

[(1, 217342020), (2, 108671010), (3, 72447340), (4, 54335505), (5, 43468404), (6, 36223670), (7, 31048860), (10, 21734202), (12, 18111835), (14, 15524430), (15, 14489468), (20, 10867101), (21, 10349620), (28, 7762215), (30, 7244734), (35, 6209772), (42, 5174810), (60, 3622367), (70, 3104886), (84, 2587405), (105, 2069924), (140, 1552443), (210, 1034962), (420, 517481)]