221285780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{30649}}^1$

素因数の和:30696

約数の個数: 36

約数和(自身を含む): 490461300

約数和(自身を除く): 269175520

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 7220, 30649, 61298, 122596, 153245, 306490, 582331, 612980, 1164662, 2329324, 2911655, 5823310, 11064289, 11646620, 22128578, 44257156, 55321445, 110642890, 221285780]

約数ペア:

[(1, 221285780), (2, 110642890), (4, 55321445), (5, 44257156), (10, 22128578), (19, 11646620), (20, 11064289), (38, 5823310), (76, 2911655), (95, 2329324), (190, 1164662), (361, 612980), (380, 582331), (722, 306490), (1444, 153245), (1805, 122596), (3610, 61298), (7220, 30649)]