21316560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{88819}}^1$

素因数の和:88835

約数の個数: 40

約数和(自身を含む): 66082080

約数和(自身を除く): 44765520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 88819, 177638, 266457, 355276, 444095, 532914, 710552, 888190, 1065828, 1332285, 1421104, 1776380, 2131656, 2664570, 3552760, 4263312, 5329140, 7105520, 10658280, 21316560]

約数ペア:

[(1, 21316560), (2, 10658280), (3, 7105520), (4, 5329140), (5, 4263312), (6, 3552760), (8, 2664570), (10, 2131656), (12, 1776380), (15, 1421104), (16, 1332285), (20, 1065828), (24, 888190), (30, 710552), (40, 532914), (48, 444095), (60, 355276), (80, 266457), (120, 177638), (240, 88819)]