28838140

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{21521}}^1$

素因数の和:21597

約数の個数: 24

約数和(自身を含む): 61466832

約数和(自身を除く): 32628692

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 21521, 43042, 86084, 107605, 215210, 430420, 1441907, 2883814, 5767628, 7209535, 14419070, 28838140]

約数ペア:

[(1, 28838140), (2, 14419070), (4, 7209535), (5, 5767628), (10, 2883814), (20, 1441907), (67, 430420), (134, 215210), (268, 107605), (335, 86084), (670, 43042), (1340, 21521)]