20389220

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{467}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 44815680

約数和(自身を除く): 24426460

約数列:

[1, 2, 4, 5, 10, 20, 37, 59, 74, 118, 148, 185, 236, 295, 370, 467, 590, 740, 934, 1180, 1868, 2183, 2335, 4366, 4670, 8732, 9340, 10915, 17279, 21830, 27553, 34558, 43660, 55106, 69116, 86395, 110212, 137765, 172790, 275530, 345580, 551060, 1019461, 2038922, 4077844, 5097305, 10194610, 20389220]

約数ペア:

[(1, 20389220), (2, 10194610), (4, 5097305), (5, 4077844), (10, 2038922), (20, 1019461), (37, 551060), (59, 345580), (74, 275530), (118, 172790), (148, 137765), (185, 110212), (236, 86395), (295, 69116), (370, 55106), (467, 43660), (590, 34558), (740, 27553), (934, 21830), (1180, 17279), (1868, 10915), (2183, 9340), (2335, 8732), (4366, 4670)]