21551320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4051}}^1$

素因数の和:4088

約数の個数: 64

約数和(自身を含む): 58348800

約数和(自身を除く): 36797480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 4051, 5320, 8102, 16204, 20255, 28357, 32408, 40510, 56714, 76969, 81020, 113428, 141785, 153938, 162040, 226856, 283570, 307876, 384845, 538783, 567140, 615752, 769690, 1077566, 1134280, 1539380, 2155132, 2693915, 3078760, 4310264, 5387830, 10775660, 21551320]

約数ペア:

[(1, 21551320), (2, 10775660), (4, 5387830), (5, 4310264), (7, 3078760), (8, 2693915), (10, 2155132), (14, 1539380), (19, 1134280), (20, 1077566), (28, 769690), (35, 615752), (38, 567140), (40, 538783), (56, 384845), (70, 307876), (76, 283570), (95, 226856), (133, 162040), (140, 153938), (152, 141785), (190, 113428), (266, 81020), (280, 76969), (380, 56714), (532, 40510), (665, 32408), (760, 28357), (1064, 20255), (1330, 16204), (2660, 8102), (4051, 5320)]