71038640

素因数分解:

$2^4\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1381}}^1$

素因数の和:2037

約数の個数: 40

約数和(自身を含む): 165541488

約数和(自身を除く): 94502848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 643, 1286, 1381, 2572, 2762, 3215, 5144, 5524, 6430, 6905, 10288, 11048, 12860, 13810, 22096, 25720, 27620, 51440, 55240, 110480, 887983, 1775966, 3551932, 4439915, 7103864, 8879830, 14207728, 17759660, 35519320, 71038640]

約数ペア:

[(1, 71038640), (2, 35519320), (4, 17759660), (5, 14207728), (8, 8879830), (10, 7103864), (16, 4439915), (20, 3551932), (40, 1775966), (80, 887983), (643, 110480), (1286, 55240), (1381, 51440), (2572, 27620), (2762, 25720), (3215, 22096), (5144, 13810), (5524, 12860), (6430, 11048), (6905, 10288)]