20217615

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6449}}^1$

素因数の和:6487

約数の個数: 32

約数和(自身を含む): 37152000

約数和(自身を除く): 16934385

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 165, 209, 285, 627, 1045, 3135, 6449, 19347, 32245, 70939, 96735, 122531, 212817, 354695, 367593, 612655, 1064085, 1347841, 1837965, 4043523, 6739205, 20217615]

約数ペア:

[(1, 20217615), (3, 6739205), (5, 4043523), (11, 1837965), (15, 1347841), (19, 1064085), (33, 612655), (55, 367593), (57, 354695), (95, 212817), (165, 122531), (209, 96735), (285, 70939), (627, 32245), (1045, 19347), (3135, 6449)]