20804810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8423}}^1$

素因数の和:8462

約数の個数: 32

約数和(自身を含む): 42456960

約数和(自身を除く): 21652150

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 8423, 16846, 42115, 84230, 109499, 160037, 218998, 320074, 547495, 800185, 1094990, 1600370, 2080481, 4160962, 10402405, 20804810]

約数ペア:

[(1, 20804810), (2, 10402405), (5, 4160962), (10, 2080481), (13, 1600370), (19, 1094990), (26, 800185), (38, 547495), (65, 320074), (95, 218998), (130, 160037), (190, 109499), (247, 84230), (494, 42115), (1235, 16846), (2470, 8423)]