81364868

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{17581}}^1$

素因数の和:17687

約数の個数: 24

約数和(自身を含む): 155073240

約数和(自身を除く): 73708372

約数列:

[1, 2, 4, 13, 26, 52, 89, 178, 356, 1157, 2314, 4628, 17581, 35162, 70324, 228553, 457106, 914212, 1564709, 3129418, 6258836, 20341217, 40682434, 81364868]

約数ペア:

[(1, 81364868), (2, 40682434), (4, 20341217), (13, 6258836), (26, 3129418), (52, 1564709), (89, 914212), (178, 457106), (356, 228553), (1157, 70324), (2314, 35162), (4628, 17581)]