20566390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{563}}^1$

素因数の和:864

約数の個数: 32

約数和(自身を含む): 40080096

約数和(自身を除く): 19513706

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 281, 562, 563, 1126, 1405, 2810, 2815, 3653, 5630, 7306, 7319, 14638, 18265, 36530, 36595, 73190, 158203, 316406, 791015, 1582030, 2056639, 4113278, 10283195, 20566390]

約数ペア:

[(1, 20566390), (2, 10283195), (5, 4113278), (10, 2056639), (13, 1582030), (26, 791015), (65, 316406), (130, 158203), (281, 73190), (562, 36595), (563, 36530), (1126, 18265), (1405, 14638), (2810, 7319), (2815, 7306), (3653, 5630)]