20581695

素因数分解:

$3^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{571}}^1$

素因数の和:677

約数の個数: 40

約数和(自身を含む): 37374480

約数和(自身を除く): 16792785

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 89, 135, 267, 405, 445, 571, 801, 1335, 1713, 2403, 2855, 4005, 5139, 7209, 8565, 12015, 15417, 25695, 36045, 46251, 50819, 77085, 152457, 231255, 254095, 457371, 762285, 1372113, 2286855, 4116339, 6860565, 20581695]

約数ペア:

[(1, 20581695), (3, 6860565), (5, 4116339), (9, 2286855), (15, 1372113), (27, 762285), (45, 457371), (81, 254095), (89, 231255), (135, 152457), (267, 77085), (405, 50819), (445, 46251), (571, 36045), (801, 25695), (1335, 15417), (1713, 12015), (2403, 8565), (2855, 7209), (4005, 5139)]