20558320

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11173}}^1$

素因数の和:11209

約数の個数: 40

約数和(自身を含む): 49880736

約数和(自身を除く): 29322416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11173, 22346, 44692, 55865, 89384, 111730, 178768, 223460, 256979, 446920, 513958, 893840, 1027916, 1284895, 2055832, 2569790, 4111664, 5139580, 10279160, 20558320]

約数ペア:

[(1, 20558320), (2, 10279160), (4, 5139580), (5, 4111664), (8, 2569790), (10, 2055832), (16, 1284895), (20, 1027916), (23, 893840), (40, 513958), (46, 446920), (80, 256979), (92, 223460), (115, 178768), (184, 111730), (230, 89384), (368, 55865), (460, 44692), (920, 22346), (1840, 11173)]