1291940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4969}}^1$

素因数の和:4991

約数の個数: 24

約数和(自身を含む): 2922360

約数和(自身を除く): 1630420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 4969, 9938, 19876, 24845, 49690, 64597, 99380, 129194, 258388, 322985, 645970, 1291940]

約数ペア:

[(1, 1291940), (2, 645970), (4, 322985), (5, 258388), (10, 129194), (13, 99380), (20, 64597), (26, 49690), (52, 24845), (65, 19876), (130, 9938), (260, 4969)]