20578768

素因数分解:

$2^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4273}}^1$

素因数の和:4331

約数の個数: 40

約数和(自身を含む): 46637888

約数和(自身を除く): 26059120

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 56, 86, 112, 172, 301, 344, 602, 688, 1204, 2408, 4273, 4816, 8546, 17092, 29911, 34184, 59822, 68368, 119644, 183739, 239288, 367478, 478576, 734956, 1286173, 1469912, 2572346, 2939824, 5144692, 10289384, 20578768]

約数ペア:

[(1, 20578768), (2, 10289384), (4, 5144692), (7, 2939824), (8, 2572346), (14, 1469912), (16, 1286173), (28, 734956), (43, 478576), (56, 367478), (86, 239288), (112, 183739), (172, 119644), (301, 68368), (344, 59822), (602, 34184), (688, 29911), (1204, 17092), (2408, 8546), (4273, 4816)]