81405928

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{619}}^1\times {\mathrm{967}}^1$

素因数の和:1609

約数の個数: 32

約数和(自身を含む): 162043200

約数和(自身を除く): 80637272

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 619, 967, 1238, 1934, 2476, 3868, 4952, 7736, 10523, 16439, 21046, 32878, 42092, 65756, 84184, 131512, 598573, 1197146, 2394292, 4788584, 10175741, 20351482, 40702964, 81405928]

約数ペア:

[(1, 81405928), (2, 40702964), (4, 20351482), (8, 10175741), (17, 4788584), (34, 2394292), (68, 1197146), (136, 598573), (619, 131512), (967, 84184), (1238, 65756), (1934, 42092), (2476, 32878), (3868, 21046), (4952, 16439), (7736, 10523)]