28863320

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1$

素因数の和:324

約数の個数: 64

約数和(自身を含む): 67525920

約数和(自身を除く): 38662600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 97, 172, 173, 194, 215, 344, 346, 388, 430, 485, 692, 776, 860, 865, 970, 1384, 1720, 1730, 1940, 3460, 3880, 4171, 6920, 7439, 8342, 14878, 16684, 16781, 20855, 29756, 33368, 33562, 37195, 41710, 59512, 67124, 74390, 83420, 83905, 134248, 148780, 166840, 167810, 297560, 335620, 671240, 721583, 1443166, 2886332, 3607915, 5772664, 7215830, 14431660, 28863320]

約数ペア:

[(1, 28863320), (2, 14431660), (4, 7215830), (5, 5772664), (8, 3607915), (10, 2886332), (20, 1443166), (40, 721583), (43, 671240), (86, 335620), (97, 297560), (172, 167810), (173, 166840), (194, 148780), (215, 134248), (344, 83905), (346, 83420), (388, 74390), (430, 67124), (485, 59512), (692, 41710), (776, 37195), (860, 33562), (865, 33368), (970, 29756), (1384, 20855), (1720, 16781), (1730, 16684), (1940, 14878), (3460, 8342), (3880, 7439), (4171, 6920)]