81656920

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{30469}}^1$

素因数の和:30547

約数の個数: 32

約数和(自身を含む): 186476400

約数和(自身を除く): 104819480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 30469, 60938, 121876, 152345, 243752, 304690, 609380, 1218760, 2041423, 4082846, 8165692, 10207115, 16331384, 20414230, 40828460, 81656920]

約数ペア:

[(1, 81656920), (2, 40828460), (4, 20414230), (5, 16331384), (8, 10207115), (10, 8165692), (20, 4082846), (40, 2041423), (67, 1218760), (134, 609380), (268, 304690), (335, 243752), (536, 152345), (670, 121876), (1340, 60938), (2680, 30469)]