28747940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{110569}}^1$

素因数の和:110591

約数の個数: 24

約数和(自身を含む): 65015160

約数和(自身を除く): 36267220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 110569, 221138, 442276, 552845, 1105690, 1437397, 2211380, 2874794, 5749588, 7186985, 14373970, 28747940]

約数ペア:

[(1, 28747940), (2, 14373970), (4, 7186985), (5, 5749588), (10, 2874794), (13, 2211380), (20, 1437397), (26, 1105690), (52, 552845), (65, 442276), (130, 221138), (260, 110569)]