20990700

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{83}}^1\times {\mathrm{281}}^1$

素因数の和:384

約数の個数: 108

約数和(自身を含む): 66823848

約数和(自身を除く): 45833148

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 83, 90, 100, 150, 166, 180, 225, 249, 281, 300, 332, 415, 450, 498, 562, 747, 830, 843, 900, 996, 1124, 1245, 1405, 1494, 1660, 1686, 2075, 2490, 2529, 2810, 2988, 3372, 3735, 4150, 4215, 4980, 5058, 5620, 6225, 7025, 7470, 8300, 8430, 10116, 12450, 12645, 14050, 14940, 16860, 18675, 21075, 23323, 24900, 25290, 28100, 37350, 42150, 46646, 50580, 63225, 69969, 74700, 84300, 93292, 116615, 126450, 139938, 209907, 233230, 252900, 279876, 349845, 419814, 466460, 583075, 699690, 839628, 1049535, 1166150, 1399380, 1749225, 2099070, 2332300, 3498450, 4198140, 5247675, 6996900, 10495350, 20990700]

約数ペア:

[(1, 20990700), (2, 10495350), (3, 6996900), (4, 5247675), (5, 4198140), (6, 3498450), (9, 2332300), (10, 2099070), (12, 1749225), (15, 1399380), (18, 1166150), (20, 1049535), (25, 839628), (30, 699690), (36, 583075), (45, 466460), (50, 419814), (60, 349845), (75, 279876), (83, 252900), (90, 233230), (100, 209907), (150, 139938), (166, 126450), (180, 116615), (225, 93292), (249, 84300), (281, 74700), (300, 69969), (332, 63225), (415, 50580), (450, 46646), (498, 42150), (562, 37350), (747, 28100), (830, 25290), (843, 24900), (900, 23323), (996, 21075), (1124, 18675), (1245, 16860), (1405, 14940), (1494, 14050), (1660, 12645), (1686, 12450), (2075, 10116), (2490, 8430), (2529, 8300), (2810, 7470), (2988, 7025), (3372, 6225), (3735, 5620), (4150, 5058), (4215, 4980)]