21258300

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{191}}^1$

素因数の和:268

約数の個数: 144

約数和(自身を含む): 71995392

約数和(自身を除く): 50737092

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 53, 60, 70, 75, 84, 100, 105, 106, 140, 150, 159, 175, 191, 210, 212, 265, 300, 318, 350, 371, 382, 420, 525, 530, 573, 636, 700, 742, 764, 795, 955, 1050, 1060, 1113, 1146, 1325, 1337, 1484, 1590, 1855, 1910, 2100, 2226, 2292, 2650, 2674, 2865, 3180, 3710, 3820, 3975, 4011, 4452, 4775, 5300, 5348, 5565, 5730, 6685, 7420, 7950, 8022, 9275, 9550, 10123, 11130, 11460, 13370, 14325, 15900, 16044, 18550, 19100, 20055, 20246, 22260, 26740, 27825, 28650, 30369, 33425, 37100, 40110, 40492, 50615, 55650, 57300, 60738, 66850, 70861, 80220, 100275, 101230, 111300, 121476, 133700, 141722, 151845, 200550, 202460, 212583, 253075, 283444, 303690, 354305, 401100, 425166, 506150, 607380, 708610, 759225, 850332, 1012300, 1062915, 1417220, 1518450, 1771525, 2125830, 3036900, 3543050, 4251660, 5314575, 7086100, 10629150, 21258300]

約数ペア:

[(1, 21258300), (2, 10629150), (3, 7086100), (4, 5314575), (5, 4251660), (6, 3543050), (7, 3036900), (10, 2125830), (12, 1771525), (14, 1518450), (15, 1417220), (20, 1062915), (21, 1012300), (25, 850332), (28, 759225), (30, 708610), (35, 607380), (42, 506150), (50, 425166), (53, 401100), (60, 354305), (70, 303690), (75, 283444), (84, 253075), (100, 212583), (105, 202460), (106, 200550), (140, 151845), (150, 141722), (159, 133700), (175, 121476), (191, 111300), (210, 101230), (212, 100275), (265, 80220), (300, 70861), (318, 66850), (350, 60738), (371, 57300), (382, 55650), (420, 50615), (525, 40492), (530, 40110), (573, 37100), (636, 33425), (700, 30369), (742, 28650), (764, 27825), (795, 26740), (955, 22260), (1050, 20246), (1060, 20055), (1113, 19100), (1146, 18550), (1325, 16044), (1337, 15900), (1484, 14325), (1590, 13370), (1855, 11460), (1910, 11130), (2100, 10123), (2226, 9550), (2292, 9275), (2650, 8022), (2674, 7950), (2865, 7420), (3180, 6685), (3710, 5730), (3820, 5565), (3975, 5348), (4011, 5300), (4452, 4775)]