18939520

素因数分解:

$2^7\times 5^1\times {\mathrm{101}}^1\times {\mathrm{293}}^1$

素因数の和:413

約数の個数: 64

約数和(自身を含む): 45881640

約数和(自身を除く): 26942120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 101, 128, 160, 202, 293, 320, 404, 505, 586, 640, 808, 1010, 1172, 1465, 1616, 2020, 2344, 2930, 3232, 4040, 4688, 5860, 6464, 8080, 9376, 11720, 12928, 16160, 18752, 23440, 29593, 32320, 37504, 46880, 59186, 64640, 93760, 118372, 147965, 187520, 236744, 295930, 473488, 591860, 946976, 1183720, 1893952, 2367440, 3787904, 4734880, 9469760, 18939520]

約数ペア:

[(1, 18939520), (2, 9469760), (4, 4734880), (5, 3787904), (8, 2367440), (10, 1893952), (16, 1183720), (20, 946976), (32, 591860), (40, 473488), (64, 295930), (80, 236744), (101, 187520), (128, 147965), (160, 118372), (202, 93760), (293, 64640), (320, 59186), (404, 46880), (505, 37504), (586, 32320), (640, 29593), (808, 23440), (1010, 18752), (1172, 16160), (1465, 12928), (1616, 11720), (2020, 9376), (2344, 8080), (2930, 6464), (3232, 5860), (4040, 4688)]