20571660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{4969}}^1$

素因数の和:5007

約数の個数: 72

約数和(自身を含む): 65126880

約数和(自身を除く): 44555220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 4969, 9938, 14907, 19876, 24845, 29814, 44721, 49690, 59628, 74535, 89442, 99380, 114287, 149070, 178884, 223605, 228574, 298140, 342861, 447210, 457148, 571435, 685722, 894420, 1028583, 1142870, 1371444, 1714305, 2057166, 2285740, 3428610, 4114332, 5142915, 6857220, 10285830, 20571660]

約数ペア:

[(1, 20571660), (2, 10285830), (3, 6857220), (4, 5142915), (5, 4114332), (6, 3428610), (9, 2285740), (10, 2057166), (12, 1714305), (15, 1371444), (18, 1142870), (20, 1028583), (23, 894420), (30, 685722), (36, 571435), (45, 457148), (46, 447210), (60, 342861), (69, 298140), (90, 228574), (92, 223605), (115, 178884), (138, 149070), (180, 114287), (207, 99380), (230, 89442), (276, 74535), (345, 59628), (414, 49690), (460, 44721), (690, 29814), (828, 24845), (1035, 19876), (1380, 14907), (2070, 9938), (4140, 4969)]