201331690

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{641}}^2$

素因数の和:1303

約数の個数: 36

約数和(自身を含む): 422222598

約数和(自身を除く): 220890908

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 641, 1282, 3205, 4487, 6410, 8974, 22435, 31409, 44870, 62818, 157045, 314090, 410881, 821762, 2054405, 2876167, 4108810, 5752334, 14380835, 20133169, 28761670, 40266338, 100665845, 201331690]

約数ペア:

[(1, 201331690), (2, 100665845), (5, 40266338), (7, 28761670), (10, 20133169), (14, 14380835), (35, 5752334), (49, 4108810), (70, 2876167), (98, 2054405), (245, 821762), (490, 410881), (641, 314090), (1282, 157045), (3205, 62818), (4487, 44870), (6410, 31409), (8974, 22435)]