20503120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1013}}^1$

素因数の和:1060

約数の個数: 80

約数和(自身を含む): 54317952

約数和(自身を除く): 33814832

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 40, 44, 46, 55, 80, 88, 92, 110, 115, 176, 184, 220, 230, 253, 368, 440, 460, 506, 880, 920, 1012, 1013, 1265, 1840, 2024, 2026, 2530, 4048, 4052, 5060, 5065, 8104, 10120, 10130, 11143, 16208, 20240, 20260, 22286, 23299, 40520, 44572, 46598, 55715, 81040, 89144, 93196, 111430, 116495, 178288, 186392, 222860, 232990, 256289, 372784, 445720, 465980, 512578, 891440, 931960, 1025156, 1281445, 1863920, 2050312, 2562890, 4100624, 5125780, 10251560, 20503120]

約数ペア:

[(1, 20503120), (2, 10251560), (4, 5125780), (5, 4100624), (8, 2562890), (10, 2050312), (11, 1863920), (16, 1281445), (20, 1025156), (22, 931960), (23, 891440), (40, 512578), (44, 465980), (46, 445720), (55, 372784), (80, 256289), (88, 232990), (92, 222860), (110, 186392), (115, 178288), (176, 116495), (184, 111430), (220, 93196), (230, 89144), (253, 81040), (368, 55715), (440, 46598), (460, 44572), (506, 40520), (880, 23299), (920, 22286), (1012, 20260), (1013, 20240), (1265, 16208), (1840, 11143), (2024, 10130), (2026, 10120), (2530, 8104), (4048, 5065), (4052, 5060)]