289720810

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{367}}^1\times {\mathrm{887}}^1$

素因数の和:1350

約数の個数: 32

約数和(自身を含む): 529390080

約数和(自身を除く): 239669270

約数列:

[1, 2, 5, 10, 89, 178, 367, 445, 734, 887, 890, 1774, 1835, 3670, 4435, 8870, 32663, 65326, 78943, 157886, 163315, 325529, 326630, 394715, 651058, 789430, 1627645, 3255290, 28972081, 57944162, 144860405, 289720810]

約数ペア:

[(1, 289720810), (2, 144860405), (5, 57944162), (10, 28972081), (89, 3255290), (178, 1627645), (367, 789430), (445, 651058), (734, 394715), (887, 326630), (890, 325529), (1774, 163315), (1835, 157886), (3670, 78943), (4435, 65326), (8870, 32663)]