220455

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:108

約数の個数: 32

約数和(自身を含む): 414720

約数和(自身を除く): 194265

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 71, 115, 135, 207, 213, 345, 355, 621, 639, 1035, 1065, 1633, 1917, 3105, 3195, 4899, 8165, 9585, 14697, 24495, 44091, 73485, 220455]

約数ペア:

[(1, 220455), (3, 73485), (5, 44091), (9, 24495), (15, 14697), (23, 9585), (27, 8165), (45, 4899), (69, 3195), (71, 3105), (115, 1917), (135, 1633), (207, 1065), (213, 1035), (345, 639), (355, 621)]