9890500

素因数分解:

$2^2\times 5^3\times {\mathrm{131}}^1\times {\mathrm{151}}^1$

素因数の和:301

約数の個数: 48

約数和(自身を含む): 21909888

約数和(自身を除く): 12019388

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 131, 151, 250, 262, 302, 500, 524, 604, 655, 755, 1310, 1510, 2620, 3020, 3275, 3775, 6550, 7550, 13100, 15100, 16375, 18875, 19781, 32750, 37750, 39562, 65500, 75500, 79124, 98905, 197810, 395620, 494525, 989050, 1978100, 2472625, 4945250, 9890500]

約数ペア:

[(1, 9890500), (2, 4945250), (4, 2472625), (5, 1978100), (10, 989050), (20, 494525), (25, 395620), (50, 197810), (100, 98905), (125, 79124), (131, 75500), (151, 65500), (250, 39562), (262, 37750), (302, 32750), (500, 19781), (524, 18875), (604, 16375), (655, 15100), (755, 13100), (1310, 7550), (1510, 6550), (2620, 3775), (3020, 3275)]