21499965

素因数分解:

$3^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{2377}}^1$

素因数の和:2458

約数の個数: 32

約数和(自身を含む): 38808960

約数和(自身を除く): 17308995

約数列:

[1, 3, 5, 9, 15, 27, 45, 67, 135, 201, 335, 603, 1005, 1809, 2377, 3015, 7131, 9045, 11885, 21393, 35655, 64179, 106965, 159259, 320895, 477777, 796295, 1433331, 2388885, 4299993, 7166655, 21499965]

約数ペア:

[(1, 21499965), (3, 7166655), (5, 4299993), (9, 2388885), (15, 1433331), (27, 796295), (45, 477777), (67, 320895), (135, 159259), (201, 106965), (335, 64179), (603, 35655), (1005, 21393), (1809, 11885), (2377, 9045), (3015, 7131)]