20956715

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 8073685

約数列:

[1, 5, 13, 19, 65, 71, 95, 239, 247, 355, 923, 1195, 1235, 1349, 3107, 4541, 4615, 6745, 15535, 16969, 17537, 22705, 59033, 84845, 87685, 220597, 295165, 322411, 1102985, 1612055, 4191343, 20956715]

約数ペア:

[(1, 20956715), (5, 4191343), (13, 1612055), (19, 1102985), (65, 322411), (71, 295165), (95, 220597), (239, 87685), (247, 84845), (355, 59033), (923, 22705), (1195, 17537), (1235, 16969), (1349, 15535), (3107, 6745), (4541, 4615)]