72638120

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{2833}}^1$

素因数の和:3485

約数の個数: 32

約数和(自身を含む): 163748520

約数和(自身を除く): 91110400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2564, 2833, 3205, 5128, 5666, 6410, 11332, 12820, 14165, 22664, 25640, 28330, 56660, 113320, 1815953, 3631906, 7263812, 9079765, 14527624, 18159530, 36319060, 72638120]

約数ペア:

[(1, 72638120), (2, 36319060), (4, 18159530), (5, 14527624), (8, 9079765), (10, 7263812), (20, 3631906), (40, 1815953), (641, 113320), (1282, 56660), (2564, 28330), (2833, 25640), (3205, 22664), (5128, 14165), (5666, 12820), (6410, 11332)]