128991280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{146581}}^1$

素因数の和:146605

約数の個数: 40

約数和(自身を含む): 327171024

約数和(自身を除く): 198179744

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 146581, 293162, 586324, 732905, 1172648, 1465810, 1612391, 2345296, 2931620, 3224782, 5863240, 6449564, 8061955, 11726480, 12899128, 16123910, 25798256, 32247820, 64495640, 128991280]

約数ペア:

[(1, 128991280), (2, 64495640), (4, 32247820), (5, 25798256), (8, 16123910), (10, 12899128), (11, 11726480), (16, 8061955), (20, 6449564), (22, 5863240), (40, 3224782), (44, 2931620), (55, 2345296), (80, 1612391), (88, 1465810), (110, 1172648), (176, 732905), (220, 586324), (440, 293162), (880, 146581)]