20272455

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{463}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 40535040

約数和(自身を除く): 20262585

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 139, 315, 417, 463, 695, 973, 1251, 1389, 2085, 2315, 2919, 3241, 4167, 4865, 6255, 6945, 8757, 9723, 14595, 16205, 20835, 29169, 43785, 48615, 64357, 145845, 193071, 321785, 450499, 579213, 965355, 1351497, 2252495, 2896065, 4054491, 6757485, 20272455]

約数ペア:

[(1, 20272455), (3, 6757485), (5, 4054491), (7, 2896065), (9, 2252495), (15, 1351497), (21, 965355), (35, 579213), (45, 450499), (63, 321785), (105, 193071), (139, 145845), (315, 64357), (417, 48615), (463, 43785), (695, 29169), (973, 20835), (1251, 16205), (1389, 14595), (2085, 9723), (2315, 8757), (2919, 6945), (3241, 6255), (4167, 4865)]