20556140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{419}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 26860180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 223, 419, 446, 838, 892, 1115, 1676, 2095, 2230, 2453, 4190, 4460, 4609, 4906, 8380, 9218, 9812, 12265, 18436, 23045, 24530, 46090, 49060, 92180, 93437, 186874, 373748, 467185, 934370, 1027807, 1868740, 2055614, 4111228, 5139035, 10278070, 20556140]

約数ペア:

[(1, 20556140), (2, 10278070), (4, 5139035), (5, 4111228), (10, 2055614), (11, 1868740), (20, 1027807), (22, 934370), (44, 467185), (55, 373748), (110, 186874), (220, 93437), (223, 92180), (419, 49060), (446, 46090), (838, 24530), (892, 23045), (1115, 18436), (1676, 12265), (2095, 9812), (2230, 9218), (2453, 8380), (4190, 4906), (4460, 4609)]