28319655

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{20747}}^1$

素因数の和:20775

約数の個数: 32

約数和(自身を含む): 55770624

約数和(自身を除く): 27450969

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 20747, 62241, 103735, 145229, 269711, 311205, 435687, 726145, 809133, 1348555, 1887977, 2178435, 4045665, 5663931, 9439885, 28319655]

約数ペア:

[(1, 28319655), (3, 9439885), (5, 5663931), (7, 4045665), (13, 2178435), (15, 1887977), (21, 1348555), (35, 809133), (39, 726145), (65, 435687), (91, 311205), (105, 269711), (195, 145229), (273, 103735), (455, 62241), (1365, 20747)]