81222640

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{24763}}^1$

素因数の和:24817

約数の個数: 40

約数和(自身を含む): 193456368

約数和(自身を除く): 112233728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 24763, 49526, 99052, 123815, 198104, 247630, 396208, 495260, 990520, 1015283, 1981040, 2030566, 4061132, 5076415, 8122264, 10152830, 16244528, 20305660, 40611320, 81222640]

約数ペア:

[(1, 81222640), (2, 40611320), (4, 20305660), (5, 16244528), (8, 10152830), (10, 8122264), (16, 5076415), (20, 4061132), (40, 2030566), (41, 1981040), (80, 1015283), (82, 990520), (164, 495260), (205, 396208), (328, 247630), (410, 198104), (656, 123815), (820, 99052), (1640, 49526), (3280, 24763)]