20506570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{271}}^1$

素因数の和:355

約数の個数: 64

約数和(自身を含む): 45121536

約数和(自身を除く): 24614966

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 47, 70, 94, 115, 161, 230, 235, 271, 322, 329, 470, 542, 658, 805, 1081, 1355, 1610, 1645, 1897, 2162, 2710, 3290, 3794, 5405, 6233, 7567, 9485, 10810, 12466, 12737, 15134, 18970, 25474, 31165, 37835, 43631, 62330, 63685, 75670, 87262, 89159, 127370, 178318, 218155, 292951, 436310, 445795, 585902, 891590, 1464755, 2050657, 2929510, 4101314, 10253285, 20506570]

約数ペア:

[(1, 20506570), (2, 10253285), (5, 4101314), (7, 2929510), (10, 2050657), (14, 1464755), (23, 891590), (35, 585902), (46, 445795), (47, 436310), (70, 292951), (94, 218155), (115, 178318), (161, 127370), (230, 89159), (235, 87262), (271, 75670), (322, 63685), (329, 62330), (470, 43631), (542, 37835), (658, 31165), (805, 25474), (1081, 18970), (1355, 15134), (1610, 12737), (1645, 12466), (1897, 10810), (2162, 9485), (2710, 7567), (3290, 6233), (3794, 5405)]