81194680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{709}}^1$

素因数の和:1136

約数の個数: 64

約数和(自身を含む): 209592000

約数和(自身を除く): 128397320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 409, 709, 818, 1418, 1636, 2045, 2836, 2863, 3272, 3545, 4090, 4963, 5672, 5726, 7090, 8180, 9926, 11452, 14180, 14315, 16360, 19852, 22904, 24815, 28360, 28630, 39704, 49630, 57260, 99260, 114520, 198520, 289981, 579962, 1159924, 1449905, 2029867, 2319848, 2899810, 4059734, 5799620, 8119468, 10149335, 11599240, 16238936, 20298670, 40597340, 81194680]

約数ペア:

[(1, 81194680), (2, 40597340), (4, 20298670), (5, 16238936), (7, 11599240), (8, 10149335), (10, 8119468), (14, 5799620), (20, 4059734), (28, 2899810), (35, 2319848), (40, 2029867), (56, 1449905), (70, 1159924), (140, 579962), (280, 289981), (409, 198520), (709, 114520), (818, 99260), (1418, 57260), (1636, 49630), (2045, 39704), (2836, 28630), (2863, 28360), (3272, 24815), (3545, 22904), (4090, 19852), (4963, 16360), (5672, 14315), (5726, 14180), (7090, 11452), (8180, 9926)]