20613780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{359}}^1$

素因数の和:414

約数の個数: 144

約数和(自身を含む): 70761600

約数和(自身を除く): 50147820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 29, 30, 33, 36, 44, 45, 55, 58, 60, 66, 87, 90, 99, 110, 116, 132, 145, 165, 174, 180, 198, 220, 261, 290, 319, 330, 348, 359, 396, 435, 495, 522, 580, 638, 660, 718, 870, 957, 990, 1044, 1077, 1276, 1305, 1436, 1595, 1740, 1795, 1914, 1980, 2154, 2610, 2871, 3190, 3231, 3590, 3828, 3949, 4308, 4785, 5220, 5385, 5742, 6380, 6462, 7180, 7898, 9570, 10411, 10770, 11484, 11847, 12924, 14355, 15796, 16155, 19140, 19745, 20822, 21540, 23694, 28710, 31233, 32310, 35541, 39490, 41644, 47388, 52055, 57420, 59235, 62466, 64620, 71082, 78980, 93699, 104110, 114521, 118470, 124932, 142164, 156165, 177705, 187398, 208220, 229042, 236940, 312330, 343563, 355410, 374796, 458084, 468495, 572605, 624660, 687126, 710820, 936990, 1030689, 1145210, 1374252, 1717815, 1873980, 2061378, 2290420, 3435630, 4122756, 5153445, 6871260, 10306890, 20613780]

約数ペア:

[(1, 20613780), (2, 10306890), (3, 6871260), (4, 5153445), (5, 4122756), (6, 3435630), (9, 2290420), (10, 2061378), (11, 1873980), (12, 1717815), (15, 1374252), (18, 1145210), (20, 1030689), (22, 936990), (29, 710820), (30, 687126), (33, 624660), (36, 572605), (44, 468495), (45, 458084), (55, 374796), (58, 355410), (60, 343563), (66, 312330), (87, 236940), (90, 229042), (99, 208220), (110, 187398), (116, 177705), (132, 156165), (145, 142164), (165, 124932), (174, 118470), (180, 114521), (198, 104110), (220, 93699), (261, 78980), (290, 71082), (319, 64620), (330, 62466), (348, 59235), (359, 57420), (396, 52055), (435, 47388), (495, 41644), (522, 39490), (580, 35541), (638, 32310), (660, 31233), (718, 28710), (870, 23694), (957, 21540), (990, 20822), (1044, 19745), (1077, 19140), (1276, 16155), (1305, 15796), (1436, 14355), (1595, 12924), (1740, 11847), (1795, 11484), (1914, 10770), (1980, 10411), (2154, 9570), (2610, 7898), (2871, 7180), (3190, 6462), (3231, 6380), (3590, 5742), (3828, 5385), (3949, 5220), (4308, 4785)]