20604320

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{509}}^1$

素因数の和:558

約数の個数: 96

約数和(自身を含む): 55520640

約数和(自身を除く): 34916320

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 32, 40, 44, 46, 55, 80, 88, 92, 110, 115, 160, 176, 184, 220, 230, 253, 352, 368, 440, 460, 506, 509, 736, 880, 920, 1012, 1018, 1265, 1760, 1840, 2024, 2036, 2530, 2545, 3680, 4048, 4072, 5060, 5090, 5599, 8096, 8144, 10120, 10180, 11198, 11707, 16288, 20240, 20360, 22396, 23414, 27995, 40480, 40720, 44792, 46828, 55990, 58535, 81440, 89584, 93656, 111980, 117070, 128777, 179168, 187312, 223960, 234140, 257554, 374624, 447920, 468280, 515108, 643885, 895840, 936560, 1030216, 1287770, 1873120, 2060432, 2575540, 4120864, 5151080, 10302160, 20604320]

約数ペア:

[(1, 20604320), (2, 10302160), (4, 5151080), (5, 4120864), (8, 2575540), (10, 2060432), (11, 1873120), (16, 1287770), (20, 1030216), (22, 936560), (23, 895840), (32, 643885), (40, 515108), (44, 468280), (46, 447920), (55, 374624), (80, 257554), (88, 234140), (92, 223960), (110, 187312), (115, 179168), (160, 128777), (176, 117070), (184, 111980), (220, 93656), (230, 89584), (253, 81440), (352, 58535), (368, 55990), (440, 46828), (460, 44792), (506, 40720), (509, 40480), (736, 27995), (880, 23414), (920, 22396), (1012, 20360), (1018, 20240), (1265, 16288), (1760, 11707), (1840, 11198), (2024, 10180), (2036, 10120), (2530, 8144), (2545, 8096), (3680, 5599), (4048, 5090), (4072, 5060)]