20972510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{5563}}^1$

素因数の和:5612

約数の個数: 32

約数和(自身を含む): 42063840

約数和(自身を除く): 21091330

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 290, 377, 754, 1885, 3770, 5563, 11126, 27815, 55630, 72319, 144638, 161327, 322654, 361595, 723190, 806635, 1613270, 2097251, 4194502, 10486255, 20972510]

約数ペア:

[(1, 20972510), (2, 10486255), (5, 4194502), (10, 2097251), (13, 1613270), (26, 806635), (29, 723190), (58, 361595), (65, 322654), (130, 161327), (145, 144638), (290, 72319), (377, 55630), (754, 27815), (1885, 11126), (3770, 5563)]