15721844420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19172981}}^1$

素因数の和:19173031

約数の個数: 24

約数和(自身を含む): 33821140248

約数和(自身を除く): 18099295828

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 19172981, 38345962, 76691924, 95864905, 191729810, 383459620, 786092221, 1572184442, 3144368884, 3930461105, 7860922210, 15721844420]

約数ペア:

[(1, 15721844420), (2, 7860922210), (4, 3930461105), (5, 3144368884), (10, 1572184442), (20, 786092221), (41, 383459620), (82, 191729810), (164, 95864905), (205, 76691924), (410, 38345962), (820, 19172981)]