28961420

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{21613}}^1$

素因数の和:21689

約数の個数: 24

約数和(自身を含む): 61729584

約数和(自身を除く): 32768164

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 21613, 43226, 86452, 108065, 216130, 432260, 1448071, 2896142, 5792284, 7240355, 14480710, 28961420]

約数ペア:

[(1, 28961420), (2, 14480710), (4, 7240355), (5, 5792284), (10, 2896142), (20, 1448071), (67, 432260), (134, 216130), (268, 108065), (335, 86452), (670, 43226), (1340, 21613)]