81386840

素因数分解:

$2^3\times 5^1\times {\mathrm{2034671}}^1$

素因数の和:2034682

約数の個数: 16

約数和(自身を含む): 183120480

約数和(自身を除く): 101733640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2034671, 4069342, 8138684, 10173355, 16277368, 20346710, 40693420, 81386840]

約数ペア:

[(1, 81386840), (2, 40693420), (4, 20346710), (5, 16277368), (8, 10173355), (10, 8138684), (20, 4069342), (40, 2034671)]