13091920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5279}}^1$

素因数の和:5323

約数の個数: 40

約数和(自身を含む): 31426560

約数和(自身を除く): 18334640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 5279, 10558, 21116, 26395, 42232, 52790, 84464, 105580, 163649, 211160, 327298, 422320, 654596, 818245, 1309192, 1636490, 2618384, 3272980, 6545960, 13091920]

約数ペア:

[(1, 13091920), (2, 6545960), (4, 3272980), (5, 2618384), (8, 1636490), (10, 1309192), (16, 818245), (20, 654596), (31, 422320), (40, 327298), (62, 211160), (80, 163649), (124, 105580), (155, 84464), (248, 52790), (310, 42232), (496, 26395), (620, 21116), (1240, 10558), (2480, 5279)]