218420

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:239

約数の個数: 24

約数和(自身を含む): 468384

約数和(自身を除く): 249964

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 163, 268, 326, 335, 652, 670, 815, 1340, 1630, 3260, 10921, 21842, 43684, 54605, 109210, 218420]

約数ペア:

[(1, 218420), (2, 109210), (4, 54605), (5, 43684), (10, 21842), (20, 10921), (67, 3260), (134, 1630), (163, 1340), (268, 815), (326, 670), (335, 652)]