21085550930

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{51428173}}^1$

素因数の和:51428221

約数の個数: 16

約数和(自身を含む): 38879699544

約数和(自身を除く): 17794148614

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 51428173, 102856346, 257140865, 514281730, 2108555093, 4217110186, 10542775465, 21085550930]

約数ペア:

[(1, 21085550930), (2, 10542775465), (5, 4217110186), (10, 2108555093), (41, 514281730), (82, 257140865), (205, 102856346), (410, 51428173)]