991567280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1126781}}^1$

素因数の和:1126805

約数の個数: 40

約数和(自身を含む): 2514977424

約数和(自身を除く): 1523410144

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 1126781, 2253562, 4507124, 5633905, 9014248, 11267810, 12394591, 18028496, 22535620, 24789182, 45071240, 49578364, 61972955, 90142480, 99156728, 123945910, 198313456, 247891820, 495783640, 991567280]

約数ペア:

[(1, 991567280), (2, 495783640), (4, 247891820), (5, 198313456), (8, 123945910), (10, 99156728), (11, 90142480), (16, 61972955), (20, 49578364), (22, 45071240), (40, 24789182), (44, 22535620), (55, 18028496), (80, 12394591), (88, 11267810), (110, 9014248), (176, 5633905), (220, 4507124), (440, 2253562), (880, 1126781)]