21510790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{487}}^1\times {\mathrm{631}}^1$

素因数の和:1132

約数の個数: 32

約数和(自身を含む): 44411904

約数和(自身を除く): 22901114

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 487, 631, 974, 1262, 2435, 3155, 3409, 4417, 4870, 6310, 6818, 8834, 17045, 22085, 34090, 44170, 307297, 614594, 1536485, 2151079, 3072970, 4302158, 10755395, 21510790]

約数ペア:

[(1, 21510790), (2, 10755395), (5, 4302158), (7, 3072970), (10, 2151079), (14, 1536485), (35, 614594), (70, 307297), (487, 44170), (631, 34090), (974, 22085), (1262, 17045), (2435, 8834), (3155, 6818), (3409, 6310), (4417, 4870)]