20696840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16691}}^1$

素因数の和:16733

約数の個数: 32

約数和(自身を含む): 48072960

約数和(自身を除く): 27376120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16691, 33382, 66764, 83455, 133528, 166910, 333820, 517421, 667640, 1034842, 2069684, 2587105, 4139368, 5174210, 10348420, 20696840]

約数ペア:

[(1, 20696840), (2, 10348420), (4, 5174210), (5, 4139368), (8, 2587105), (10, 2069684), (20, 1034842), (31, 667640), (40, 517421), (62, 333820), (124, 166910), (155, 133528), (248, 83455), (310, 66764), (620, 33382), (1240, 16691)]