81168880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4591}}^1$

素因数の和:4634

約数の個数: 80

約数和(自身を含む): 215236224

約数和(自身を除く): 134067344

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 170, 208, 221, 260, 272, 340, 442, 520, 680, 884, 1040, 1105, 1360, 1768, 2210, 3536, 4420, 4591, 8840, 9182, 17680, 18364, 22955, 36728, 45910, 59683, 73456, 78047, 91820, 119366, 156094, 183640, 238732, 298415, 312188, 367280, 390235, 477464, 596830, 624376, 780470, 954928, 1014611, 1193660, 1248752, 1560940, 2029222, 2387320, 3121880, 4058444, 4774640, 5073055, 6243760, 8116888, 10146110, 16233776, 20292220, 40584440, 81168880]

約数ペア:

[(1, 81168880), (2, 40584440), (4, 20292220), (5, 16233776), (8, 10146110), (10, 8116888), (13, 6243760), (16, 5073055), (17, 4774640), (20, 4058444), (26, 3121880), (34, 2387320), (40, 2029222), (52, 1560940), (65, 1248752), (68, 1193660), (80, 1014611), (85, 954928), (104, 780470), (130, 624376), (136, 596830), (170, 477464), (208, 390235), (221, 367280), (260, 312188), (272, 298415), (340, 238732), (442, 183640), (520, 156094), (680, 119366), (884, 91820), (1040, 78047), (1105, 73456), (1360, 59683), (1768, 45910), (2210, 36728), (3536, 22955), (4420, 18364), (4591, 17680), (8840, 9182)]