21526180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82793}}^1$

素因数の和:82815

約数の個数: 24

約数和(自身を含む): 48682872

約数和(自身を除く): 27156692

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82793, 165586, 331172, 413965, 827930, 1076309, 1655860, 2152618, 4305236, 5381545, 10763090, 21526180]

約数ペア:

[(1, 21526180), (2, 10763090), (4, 5381545), (5, 4305236), (10, 2152618), (13, 1655860), (20, 1076309), (26, 827930), (52, 413965), (65, 331172), (130, 165586), (260, 82793)]