1978100

素因数分解:

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

素因数の和:296

約数の個数: 36

約数和(自身を含む): 4353888

約数和(自身を除く): 2375788

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 131, 151, 262, 302, 524, 604, 655, 755, 1310, 1510, 2620, 3020, 3275, 3775, 6550, 7550, 13100, 15100, 19781, 39562, 79124, 98905, 197810, 395620, 494525, 989050, 1978100]

約数ペア:

[(1, 1978100), (2, 989050), (4, 494525), (5, 395620), (10, 197810), (20, 98905), (25, 79124), (50, 39562), (100, 19781), (131, 15100), (151, 13100), (262, 7550), (302, 6550), (524, 3775), (604, 3275), (655, 3020), (755, 2620), (1310, 1510)]