90790280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{324251}}^1$

素因数の和:324269

約数の個数: 32

約数和(自身を含む): 233461440

約数和(自身を除く): 142671160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 324251, 648502, 1297004, 1621255, 2269757, 2594008, 3242510, 4539514, 6485020, 9079028, 11348785, 12970040, 18158056, 22697570, 45395140, 90790280]

約数ペア:

[(1, 90790280), (2, 45395140), (4, 22697570), (5, 18158056), (7, 12970040), (8, 11348785), (10, 9079028), (14, 6485020), (20, 4539514), (28, 3242510), (35, 2594008), (40, 2269757), (56, 1621255), (70, 1297004), (140, 648502), (280, 324251)]