21972820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1291}}^1$

素因数の和:1360

約数の個数: 48

約数和(自身を含む): 49488768

約数和(自身を除く): 27515948

約数列:

[1, 2, 4, 5, 10, 20, 23, 37, 46, 74, 92, 115, 148, 185, 230, 370, 460, 740, 851, 1291, 1702, 2582, 3404, 4255, 5164, 6455, 8510, 12910, 17020, 25820, 29693, 47767, 59386, 95534, 118772, 148465, 191068, 238835, 296930, 477670, 593860, 955340, 1098641, 2197282, 4394564, 5493205, 10986410, 21972820]

約数ペア:

[(1, 21972820), (2, 10986410), (4, 5493205), (5, 4394564), (10, 2197282), (20, 1098641), (23, 955340), (37, 593860), (46, 477670), (74, 296930), (92, 238835), (115, 191068), (148, 148465), (185, 118772), (230, 95534), (370, 59386), (460, 47767), (740, 29693), (851, 25820), (1291, 17020), (1702, 12910), (2582, 8510), (3404, 6455), (4255, 5164)]