388220780

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{289717}}^1$

素因数の和:289793

約数の個数: 24

約数和(自身を含む): 827434608

約数和(自身を除く): 439213828

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 289717, 579434, 1158868, 1448585, 2897170, 5794340, 19411039, 38822078, 77644156, 97055195, 194110390, 388220780]

約数ペア:

[(1, 388220780), (2, 194110390), (4, 97055195), (5, 77644156), (10, 38822078), (20, 19411039), (67, 5794340), (134, 2897170), (268, 1448585), (335, 1158868), (670, 579434), (1340, 289717)]