20941605

素因数分解:

$3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2543}}^1$

素因数の和:2618

約数の個数: 32

約数和(自身を含む): 37854720

約数和(自身を除く): 16913115

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 135, 183, 305, 549, 915, 1647, 2543, 2745, 7629, 8235, 12715, 22887, 38145, 68661, 114435, 155123, 343305, 465369, 775615, 1396107, 2326845, 4188321, 6980535, 20941605]

約数ペア:

[(1, 20941605), (3, 6980535), (5, 4188321), (9, 2326845), (15, 1396107), (27, 775615), (45, 465369), (61, 343305), (135, 155123), (183, 114435), (305, 68661), (549, 38145), (915, 22887), (1647, 12715), (2543, 8235), (2745, 7629)]