21762945

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:243

約数の個数: 64

約数和(自身を含む): 41564160

約数和(自身を除く): 19801215

約数列:

[1, 3, 5, 9, 15, 23, 27, 43, 45, 69, 115, 129, 135, 163, 207, 215, 345, 387, 489, 621, 645, 815, 989, 1035, 1161, 1467, 1935, 2445, 2967, 3105, 3749, 4401, 4945, 5805, 7009, 7335, 8901, 11247, 14835, 18745, 21027, 22005, 26703, 33741, 35045, 44505, 56235, 63081, 101223, 105135, 133515, 161207, 168705, 189243, 315405, 483621, 506115, 806035, 946215, 1450863, 2418105, 4352589, 7254315, 21762945]

約数ペア:

[(1, 21762945), (3, 7254315), (5, 4352589), (9, 2418105), (15, 1450863), (23, 946215), (27, 806035), (43, 506115), (45, 483621), (69, 315405), (115, 189243), (129, 168705), (135, 161207), (163, 133515), (207, 105135), (215, 101223), (345, 63081), (387, 56235), (489, 44505), (621, 35045), (645, 33741), (815, 26703), (989, 22005), (1035, 21027), (1161, 18745), (1467, 14835), (1935, 11247), (2445, 8901), (2967, 7335), (3105, 7009), (3749, 5805), (4401, 4945)]