81001264

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{163309}}^1$

素因数の和:163348

約数の個数: 20

約数和(自身を含む): 162003520

約数和(自身を除く): 81002256

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 163309, 326618, 653236, 1306472, 2612944, 5062579, 10125158, 20250316, 40500632, 81001264]

約数ペア:

[(1, 81001264), (2, 40500632), (4, 20250316), (8, 10125158), (16, 5062579), (31, 2612944), (62, 1306472), (124, 653236), (248, 326618), (496, 163309)]