68418285

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{20639}}^1$

素因数の和:20677

約数の個数: 32

約数和(自身を含む): 124830720

約数和(自身を除く): 56412435

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315, 20639, 61917, 103195, 268307, 309585, 350863, 804921, 1052589, 1341535, 1754315, 4024605, 4561219, 5262945, 13683657, 22806095, 68418285]

約数ペア:

[(1, 68418285), (3, 22806095), (5, 13683657), (13, 5262945), (15, 4561219), (17, 4024605), (39, 1754315), (51, 1341535), (65, 1052589), (85, 804921), (195, 350863), (221, 309585), (255, 268307), (663, 103195), (1105, 61917), (3315, 20639)]