17704420

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1381}}^1$

素因数の和:2031

約数の個数: 24

約数和(自身を含む): 37264248

約数和(自身を除く): 19559828

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 1381, 2564, 2762, 3205, 5524, 6410, 6905, 12820, 13810, 27620, 885221, 1770442, 3540884, 4426105, 8852210, 17704420]

約数ペア:

[(1, 17704420), (2, 8852210), (4, 4426105), (5, 3540884), (10, 1770442), (20, 885221), (641, 27620), (1282, 13810), (1381, 12820), (2564, 6905), (2762, 6410), (3205, 5524)]