2798120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{5381}}^1$

素因数の和:5405

約数の個数: 32

約数和(自身を含む): 6781320

約数和(自身を除く): 3983200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 5381, 10762, 21524, 26905, 43048, 53810, 69953, 107620, 139906, 215240, 279812, 349765, 559624, 699530, 1399060, 2798120]

約数ペア:

[(1, 2798120), (2, 1399060), (4, 699530), (5, 559624), (8, 349765), (10, 279812), (13, 215240), (20, 139906), (26, 107620), (40, 69953), (52, 53810), (65, 43048), (104, 26905), (130, 21524), (260, 10762), (520, 5381)]