20783020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{33521}}^1$

素因数の和:33561

約数の個数: 24

約数和(自身を含む): 45053568

約数和(自身を除く): 24270548

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 33521, 67042, 134084, 167605, 335210, 670420, 1039151, 2078302, 4156604, 5195755, 10391510, 20783020]

約数ペア:

[(1, 20783020), (2, 10391510), (4, 5195755), (5, 4156604), (10, 2078302), (20, 1039151), (31, 670420), (62, 335210), (124, 167605), (155, 134084), (310, 67042), (620, 33521)]