21534660

素因数分解:

$2^2\times 3^6\times 5^1\times 7^1\times {\mathrm{211}}^1$

素因数の和:245

約数の個数: 168

約数和(自身を含む): 77856576

約数和(自身を除く): 56321916

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 211, 243, 252, 270, 315, 324, 378, 405, 420, 422, 486, 540, 567, 630, 633, 729, 756, 810, 844, 945, 972, 1055, 1134, 1215, 1260, 1266, 1458, 1477, 1620, 1701, 1890, 1899, 2110, 2268, 2430, 2532, 2835, 2916, 2954, 3165, 3402, 3645, 3780, 3798, 4220, 4431, 4860, 5103, 5670, 5697, 5908, 6330, 6804, 7290, 7385, 7596, 8505, 8862, 9495, 10206, 11340, 11394, 12660, 13293, 14580, 14770, 17010, 17091, 17724, 18990, 20412, 22155, 22788, 25515, 26586, 28485, 29540, 34020, 34182, 37980, 39879, 44310, 51030, 51273, 53172, 56970, 66465, 68364, 79758, 85455, 88620, 102060, 102546, 113940, 119637, 132930, 153819, 159516, 170910, 199395, 205092, 239274, 256365, 265860, 307638, 341820, 358911, 398790, 478548, 512730, 598185, 615276, 717822, 769095, 797580, 1025460, 1076733, 1196370, 1435644, 1538190, 1794555, 2153466, 2392740, 3076380, 3589110, 4306932, 5383665, 7178220, 10767330, 21534660]

約数ペア:

[(1, 21534660), (2, 10767330), (3, 7178220), (4, 5383665), (5, 4306932), (6, 3589110), (7, 3076380), (9, 2392740), (10, 2153466), (12, 1794555), (14, 1538190), (15, 1435644), (18, 1196370), (20, 1076733), (21, 1025460), (27, 797580), (28, 769095), (30, 717822), (35, 615276), (36, 598185), (42, 512730), (45, 478548), (54, 398790), (60, 358911), (63, 341820), (70, 307638), (81, 265860), (84, 256365), (90, 239274), (105, 205092), (108, 199395), (126, 170910), (135, 159516), (140, 153819), (162, 132930), (180, 119637), (189, 113940), (210, 102546), (211, 102060), (243, 88620), (252, 85455), (270, 79758), (315, 68364), (324, 66465), (378, 56970), (405, 53172), (420, 51273), (422, 51030), (486, 44310), (540, 39879), (567, 37980), (630, 34182), (633, 34020), (729, 29540), (756, 28485), (810, 26586), (844, 25515), (945, 22788), (972, 22155), (1055, 20412), (1134, 18990), (1215, 17724), (1260, 17091), (1266, 17010), (1458, 14770), (1477, 14580), (1620, 13293), (1701, 12660), (1890, 11394), (1899, 11340), (2110, 10206), (2268, 9495), (2430, 8862), (2532, 8505), (2835, 7596), (2916, 7385), (2954, 7290), (3165, 6804), (3402, 6330), (3645, 5908), (3780, 5697), (3798, 5670), (4220, 5103), (4431, 4860)]