28920804020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12893}}^1\times {\mathrm{5903}}^1$

素因数の和:18824

約数の個数: 48

約数和(自身を含む): 63945987840

約数和(自身を除く): 35025183820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 5903, 11806, 12893, 23612, 25786, 29515, 51572, 59030, 64465, 112157, 118060, 128930, 224314, 244967, 257860, 448628, 489934, 560785, 979868, 1121570, 1224835, 2243140, 2449670, 4899340, 76107379, 152214758, 304429516, 380536895, 761073790, 1446040201, 1522147580, 2892080402, 5784160804, 7230201005, 14460402010, 28920804020]

約数ペア:

[(1, 28920804020), (2, 14460402010), (4, 7230201005), (5, 5784160804), (10, 2892080402), (19, 1522147580), (20, 1446040201), (38, 761073790), (76, 380536895), (95, 304429516), (190, 152214758), (380, 76107379), (5903, 4899340), (11806, 2449670), (12893, 2243140), (23612, 1224835), (25786, 1121570), (29515, 979868), (51572, 560785), (59030, 489934), (64465, 448628), (112157, 257860), (118060, 244967), (128930, 224314)]