20558768

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:341

約数の個数: 40

約数和(自身を含む): 40966128

約数和(自身を除く): 20407360

約数列:

[1, 2, 4, 8, 16, 83, 113, 137, 166, 226, 274, 332, 452, 548, 664, 904, 1096, 1328, 1808, 2192, 9379, 11371, 15481, 18758, 22742, 30962, 37516, 45484, 61924, 75032, 90968, 123848, 150064, 181936, 247696, 1284923, 2569846, 5139692, 10279384, 20558768]

約数ペア:

[(1, 20558768), (2, 10279384), (4, 5139692), (8, 2569846), (16, 1284923), (83, 247696), (113, 181936), (137, 150064), (166, 123848), (226, 90968), (274, 75032), (332, 61924), (452, 45484), (548, 37516), (664, 30962), (904, 22742), (1096, 18758), (1328, 15481), (1808, 11371), (2192, 9379)]