128216115

素因数分解:

$3^4\times 5^1\times {\mathrm{316583}}^1$

素因数の和:316600

約数の個数: 20

約数和(自身を含む): 229839984

約数和(自身を除く): 101623869

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 316583, 949749, 1582915, 2849247, 4748745, 8547741, 14246235, 25643223, 42738705, 128216115]

約数ペア:

[(1, 128216115), (3, 42738705), (5, 25643223), (9, 14246235), (15, 8547741), (27, 4748745), (45, 2849247), (81, 1582915), (135, 949749), (405, 316583)]