81781854

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{773}}^1$

素因数の和:1025

約数の個数: 64

約数和(自身を含む): 205079040

約数和(自身を除く): 123297186

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 154, 229, 231, 458, 462, 687, 773, 1374, 1546, 1603, 2319, 2519, 3206, 4638, 4809, 5038, 5411, 7557, 8503, 9618, 10822, 15114, 16233, 17006, 17633, 25509, 32466, 35266, 51018, 52899, 59521, 105798, 119042, 177017, 178563, 354034, 357126, 531051, 1062102, 1239119, 1947187, 2478238, 3717357, 3894374, 5841561, 7434714, 11683122, 13630309, 27260618, 40890927, 81781854]

約数ペア:

[(1, 81781854), (2, 40890927), (3, 27260618), (6, 13630309), (7, 11683122), (11, 7434714), (14, 5841561), (21, 3894374), (22, 3717357), (33, 2478238), (42, 1947187), (66, 1239119), (77, 1062102), (154, 531051), (229, 357126), (231, 354034), (458, 178563), (462, 177017), (687, 119042), (773, 105798), (1374, 59521), (1546, 52899), (1603, 51018), (2319, 35266), (2519, 32466), (3206, 25509), (4638, 17633), (4809, 17006), (5038, 16233), (5411, 15114), (7557, 10822), (8503, 9618)]