20815460

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1223}}^1$

素因数の和:1292

約数の個数: 48

約数和(自身を含む): 46884096

約数和(自身を除く): 26068636

約数列:

[1, 2, 4, 5, 10, 20, 23, 37, 46, 74, 92, 115, 148, 185, 230, 370, 460, 740, 851, 1223, 1702, 2446, 3404, 4255, 4892, 6115, 8510, 12230, 17020, 24460, 28129, 45251, 56258, 90502, 112516, 140645, 181004, 226255, 281290, 452510, 562580, 905020, 1040773, 2081546, 4163092, 5203865, 10407730, 20815460]

約数ペア:

[(1, 20815460), (2, 10407730), (4, 5203865), (5, 4163092), (10, 2081546), (20, 1040773), (23, 905020), (37, 562580), (46, 452510), (74, 281290), (92, 226255), (115, 181004), (148, 140645), (185, 112516), (230, 90502), (370, 56258), (460, 45251), (740, 28129), (851, 24460), (1223, 17020), (1702, 12230), (2446, 8510), (3404, 6115), (4255, 4892)]