20104880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14783}}^1$

素因数の和:14813

約数の個数: 40

約数和(自身を含む): 49496832

約数和(自身を除く): 29391952

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14783, 29566, 59132, 73915, 118264, 147830, 236528, 251311, 295660, 502622, 591320, 1005244, 1182640, 1256555, 2010488, 2513110, 4020976, 5026220, 10052440, 20104880]

約数ペア:

[(1, 20104880), (2, 10052440), (4, 5026220), (5, 4020976), (8, 2513110), (10, 2010488), (16, 1256555), (17, 1182640), (20, 1005244), (34, 591320), (40, 502622), (68, 295660), (80, 251311), (85, 236528), (136, 147830), (170, 118264), (272, 73915), (340, 59132), (680, 29566), (1360, 14783)]