628180

素因数分解:

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

素因数の和:664

約数の個数: 36

約数和(自身を含む): 1536948

約数和(自身を除く): 908768

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 641, 980, 1282, 2564, 3205, 4487, 6410, 8974, 12820, 17948, 22435, 31409, 44870, 62818, 89740, 125636, 157045, 314090, 628180]

約数ペア:

[(1, 628180), (2, 314090), (4, 157045), (5, 125636), (7, 89740), (10, 62818), (14, 44870), (20, 31409), (28, 22435), (35, 17948), (49, 12820), (70, 8974), (98, 6410), (140, 4487), (196, 3205), (245, 2564), (490, 1282), (641, 980)]