21284790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{809}}^1\times {\mathrm{877}}^1$

素因数の和:1696

約数の個数: 32

約数和(自身を含む): 51204960

約数和(自身を除く): 29920170

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 809, 877, 1618, 1754, 2427, 2631, 4045, 4385, 4854, 5262, 8090, 8770, 12135, 13155, 24270, 26310, 709493, 1418986, 2128479, 3547465, 4256958, 7094930, 10642395, 21284790]

約数ペア:

[(1, 21284790), (2, 10642395), (3, 7094930), (5, 4256958), (6, 3547465), (10, 2128479), (15, 1418986), (30, 709493), (809, 26310), (877, 24270), (1618, 13155), (1754, 12135), (2427, 8770), (2631, 8090), (4045, 5262), (4385, 4854)]