28919240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{577}}^1$

素因数の和:774

約数の個数: 64

約数和(自身を含む): 74908800

約数和(自身を除く): 45989560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 179, 280, 358, 577, 716, 895, 1154, 1253, 1432, 1790, 2308, 2506, 2885, 3580, 4039, 4616, 5012, 5770, 6265, 7160, 8078, 10024, 11540, 12530, 16156, 20195, 23080, 25060, 32312, 40390, 50120, 80780, 103283, 161560, 206566, 413132, 516415, 722981, 826264, 1032830, 1445962, 2065660, 2891924, 3614905, 4131320, 5783848, 7229810, 14459620, 28919240]

約数ペア:

[(1, 28919240), (2, 14459620), (4, 7229810), (5, 5783848), (7, 4131320), (8, 3614905), (10, 2891924), (14, 2065660), (20, 1445962), (28, 1032830), (35, 826264), (40, 722981), (56, 516415), (70, 413132), (140, 206566), (179, 161560), (280, 103283), (358, 80780), (577, 50120), (716, 40390), (895, 32312), (1154, 25060), (1253, 23080), (1432, 20195), (1790, 16156), (2308, 12530), (2506, 11540), (2885, 10024), (3580, 8078), (4039, 7160), (4616, 6265), (5012, 5770)]