90706280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{323951}}^1$

素因数の和:323969

約数の個数: 32

約数和(自身を含む): 233245440

約数和(自身を除く): 142539160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 323951, 647902, 1295804, 1619755, 2267657, 2591608, 3239510, 4535314, 6479020, 9070628, 11338285, 12958040, 18141256, 22676570, 45353140, 90706280]

約数ペア:

[(1, 90706280), (2, 45353140), (4, 22676570), (5, 18141256), (7, 12958040), (8, 11338285), (10, 9070628), (14, 6479020), (20, 4535314), (28, 3239510), (35, 2591608), (40, 2267657), (56, 1619755), (70, 1295804), (140, 647902), (280, 323951)]