81040016

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{991}}^1$

素因数の和:1287

約数の個数: 40

約数和(自身を含む): 166060800

約数和(自身を除く): 85020784

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 269, 304, 538, 991, 1076, 1982, 2152, 3964, 4304, 5111, 7928, 10222, 15856, 18829, 20444, 37658, 40888, 75316, 81776, 150632, 266579, 301264, 533158, 1066316, 2132632, 4265264, 5065001, 10130002, 20260004, 40520008, 81040016]

約数ペア:

[(1, 81040016), (2, 40520008), (4, 20260004), (8, 10130002), (16, 5065001), (19, 4265264), (38, 2132632), (76, 1066316), (152, 533158), (269, 301264), (304, 266579), (538, 150632), (991, 81776), (1076, 75316), (1982, 40888), (2152, 37658), (3964, 20444), (4304, 18829), (5111, 15856), (7928, 10222)]