19965480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9787}}^1$

素因数の和:9818

約数の個数: 64

約数和(自身を含む): 63426240

約数和(自身を除く): 43460760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 9787, 19574, 29361, 39148, 48935, 58722, 78296, 97870, 117444, 146805, 166379, 195740, 234888, 293610, 332758, 391480, 499137, 587220, 665516, 831895, 998274, 1174440, 1331032, 1663790, 1996548, 2495685, 3327580, 3993096, 4991370, 6655160, 9982740, 19965480]

約数ペア:

[(1, 19965480), (2, 9982740), (3, 6655160), (4, 4991370), (5, 3993096), (6, 3327580), (8, 2495685), (10, 1996548), (12, 1663790), (15, 1331032), (17, 1174440), (20, 998274), (24, 831895), (30, 665516), (34, 587220), (40, 499137), (51, 391480), (60, 332758), (68, 293610), (85, 234888), (102, 195740), (120, 166379), (136, 146805), (170, 117444), (204, 97870), (255, 78296), (340, 58722), (408, 48935), (510, 39148), (680, 29361), (1020, 19574), (2040, 9787)]