20046595120

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{612671}}^1$

素因数の和:613093

約数の個数: 40

約数和(自身を含む): 46722366720

約数和(自身を除く): 26675771600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1636, 2045, 3272, 4090, 6544, 8180, 16360, 32720, 612671, 1225342, 2450684, 3063355, 4901368, 6126710, 9802736, 12253420, 24506840, 49013680, 250582439, 501164878, 1002329756, 1252912195, 2004659512, 2505824390, 4009319024, 5011648780, 10023297560, 20046595120]

約数ペア:

[(1, 20046595120), (2, 10023297560), (4, 5011648780), (5, 4009319024), (8, 2505824390), (10, 2004659512), (16, 1252912195), (20, 1002329756), (40, 501164878), (80, 250582439), (409, 49013680), (818, 24506840), (1636, 12253420), (2045, 9802736), (3272, 6126710), (4090, 4901368), (6544, 3063355), (8180, 2450684), (16360, 1225342), (32720, 612671)]