20065581520

素因数分解:

$2^4\times 5^1\times {\mathrm{1129}}^1\times {\mathrm{222161}}^1$

素因数の和:223303

約数の個数: 40

約数和(自身を含む): 46694009160

約数和(自身を除く): 26628427640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1129, 2258, 4516, 5645, 9032, 11290, 18064, 22580, 45160, 90320, 222161, 444322, 888644, 1110805, 1777288, 2221610, 3554576, 4443220, 8886440, 17772880, 250819769, 501639538, 1003279076, 1254098845, 2006558152, 2508197690, 4013116304, 5016395380, 10032790760, 20065581520]

約数ペア:

[(1, 20065581520), (2, 10032790760), (4, 5016395380), (5, 4013116304), (8, 2508197690), (10, 2006558152), (16, 1254098845), (20, 1003279076), (40, 501639538), (80, 250819769), (1129, 17772880), (2258, 8886440), (4516, 4443220), (5645, 3554576), (9032, 2221610), (11290, 1777288), (18064, 1110805), (22580, 888644), (45160, 444322), (90320, 222161)]