20690800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1$

素因数の和:227

約数の個数: 120

約数和(自身を含む): 56183904

約数和(自身を除く): 35493104

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 25, 26, 40, 46, 50, 52, 65, 80, 92, 100, 104, 115, 130, 173, 184, 200, 208, 230, 260, 299, 325, 346, 368, 400, 460, 520, 575, 598, 650, 692, 865, 920, 1040, 1150, 1196, 1300, 1384, 1495, 1730, 1840, 2249, 2300, 2392, 2600, 2768, 2990, 3460, 3979, 4325, 4498, 4600, 4784, 5200, 5980, 6920, 7475, 7958, 8650, 8996, 9200, 11245, 11960, 13840, 14950, 15916, 17300, 17992, 19895, 22490, 23920, 29900, 31832, 34600, 35984, 39790, 44980, 51727, 56225, 59800, 63664, 69200, 79580, 89960, 99475, 103454, 112450, 119600, 159160, 179920, 198950, 206908, 224900, 258635, 318320, 397900, 413816, 449800, 517270, 795800, 827632, 899600, 1034540, 1293175, 1591600, 2069080, 2586350, 4138160, 5172700, 10345400, 20690800]

約数ペア:

[(1, 20690800), (2, 10345400), (4, 5172700), (5, 4138160), (8, 2586350), (10, 2069080), (13, 1591600), (16, 1293175), (20, 1034540), (23, 899600), (25, 827632), (26, 795800), (40, 517270), (46, 449800), (50, 413816), (52, 397900), (65, 318320), (80, 258635), (92, 224900), (100, 206908), (104, 198950), (115, 179920), (130, 159160), (173, 119600), (184, 112450), (200, 103454), (208, 99475), (230, 89960), (260, 79580), (299, 69200), (325, 63664), (346, 59800), (368, 56225), (400, 51727), (460, 44980), (520, 39790), (575, 35984), (598, 34600), (650, 31832), (692, 29900), (865, 23920), (920, 22490), (1040, 19895), (1150, 17992), (1196, 17300), (1300, 15916), (1384, 14950), (1495, 13840), (1730, 11960), (1840, 11245), (2249, 9200), (2300, 8996), (2392, 8650), (2600, 7958), (2768, 7475), (2990, 6920), (3460, 5980), (3979, 5200), (4325, 4784), (4498, 4600)]