393152120

素因数分解:

$2^3\times 5^1\times {\mathrm{499}}^1\times {\mathrm{19697}}^1$

素因数の和:20207

約数の個数: 32

約数和(自身を含む): 886410000

約数和(自身を除く): 493257880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499, 998, 1996, 2495, 3992, 4990, 9980, 19697, 19960, 39394, 78788, 98485, 157576, 196970, 393940, 787880, 9828803, 19657606, 39315212, 49144015, 78630424, 98288030, 196576060, 393152120]

約数ペア:

[(1, 393152120), (2, 196576060), (4, 98288030), (5, 78630424), (8, 49144015), (10, 39315212), (20, 19657606), (40, 9828803), (499, 787880), (998, 393940), (1996, 196970), (2495, 157576), (3992, 98485), (4990, 78788), (9980, 39394), (19697, 19960)]