20878760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74567}}^1$

素因数の和:74585

約数の個数: 32

約数和(自身を含む): 53688960

約数和(自身を除く): 32810200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74567, 149134, 298268, 372835, 521969, 596536, 745670, 1043938, 1491340, 2087876, 2609845, 2982680, 4175752, 5219690, 10439380, 20878760]

約数ペア:

[(1, 20878760), (2, 10439380), (4, 5219690), (5, 4175752), (7, 2982680), (8, 2609845), (10, 2087876), (14, 1491340), (20, 1043938), (28, 745670), (35, 596536), (40, 521969), (56, 372835), (70, 298268), (140, 149134), (280, 74567)]