20784256

素因数分解:

$2^7\times {\mathrm{71}}^1\times {\mathrm{2287}}^1$

素因数の和:2372

約数の個数: 32

約数和(自身を含む): 42007680

約数和(自身を除く): 21223424

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 128, 142, 284, 568, 1136, 2272, 2287, 4544, 4574, 9088, 9148, 18296, 36592, 73184, 146368, 162377, 292736, 324754, 649508, 1299016, 2598032, 5196064, 10392128, 20784256]

約数ペア:

[(1, 20784256), (2, 10392128), (4, 5196064), (8, 2598032), (16, 1299016), (32, 649508), (64, 324754), (71, 292736), (128, 162377), (142, 146368), (284, 73184), (568, 36592), (1136, 18296), (2272, 9148), (2287, 9088), (4544, 4574)]