21000901295

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{976559}}^1$

素因数の和:976615

約数の個数: 32

約数和(自身を含む): 30374922240

約数和(自身を除く): 9374020945

約数列:

[1, 5, 11, 17, 23, 55, 85, 115, 187, 253, 391, 935, 1265, 1955, 4301, 21505, 976559, 4882795, 10742149, 16601503, 22460857, 53710745, 83007515, 112304285, 182616533, 247069427, 381834569, 913082665, 1235347135, 1909172845, 4200180259, 21000901295]

約数ペア:

[(1, 21000901295), (5, 4200180259), (11, 1909172845), (17, 1235347135), (23, 913082665), (55, 381834569), (85, 247069427), (115, 182616533), (187, 112304285), (253, 83007515), (391, 53710745), (935, 22460857), (1265, 16601503), (1955, 10742149), (4301, 4882795), (21505, 976559)]