28642960

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{21061}}^1$

素因数の和:21091

約数の個数: 40

約数和(自身を含む): 70515576

約数和(自身を除く): 41872616

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 21061, 42122, 84244, 105305, 168488, 210610, 336976, 358037, 421220, 716074, 842440, 1432148, 1684880, 1790185, 2864296, 3580370, 5728592, 7160740, 14321480, 28642960]

約数ペア:

[(1, 28642960), (2, 14321480), (4, 7160740), (5, 5728592), (8, 3580370), (10, 2864296), (16, 1790185), (17, 1684880), (20, 1432148), (34, 842440), (40, 716074), (68, 421220), (80, 358037), (85, 336976), (136, 210610), (170, 168488), (272, 105305), (340, 84244), (680, 42122), (1360, 21061)]