20702520

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{661}}^1$

素因数の和:710

約数の個数: 128

約数和(自身を含む): 71496000

約数和(自身を除く): 50793480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 29, 30, 36, 40, 45, 54, 58, 60, 72, 87, 90, 108, 116, 120, 135, 145, 174, 180, 216, 232, 261, 270, 290, 348, 360, 435, 522, 540, 580, 661, 696, 783, 870, 1044, 1080, 1160, 1305, 1322, 1566, 1740, 1983, 2088, 2610, 2644, 3132, 3305, 3480, 3915, 3966, 5220, 5288, 5949, 6264, 6610, 7830, 7932, 9915, 10440, 11898, 13220, 15660, 15864, 17847, 19169, 19830, 23796, 26440, 29745, 31320, 35694, 38338, 39660, 47592, 57507, 59490, 71388, 76676, 79320, 89235, 95845, 115014, 118980, 142776, 153352, 172521, 178470, 191690, 230028, 237960, 287535, 345042, 356940, 383380, 460056, 517563, 575070, 690084, 713880, 766760, 862605, 1035126, 1150140, 1380168, 1725210, 2070252, 2300280, 2587815, 3450420, 4140504, 5175630, 6900840, 10351260, 20702520]

約数ペア:

[(1, 20702520), (2, 10351260), (3, 6900840), (4, 5175630), (5, 4140504), (6, 3450420), (8, 2587815), (9, 2300280), (10, 2070252), (12, 1725210), (15, 1380168), (18, 1150140), (20, 1035126), (24, 862605), (27, 766760), (29, 713880), (30, 690084), (36, 575070), (40, 517563), (45, 460056), (54, 383380), (58, 356940), (60, 345042), (72, 287535), (87, 237960), (90, 230028), (108, 191690), (116, 178470), (120, 172521), (135, 153352), (145, 142776), (174, 118980), (180, 115014), (216, 95845), (232, 89235), (261, 79320), (270, 76676), (290, 71388), (348, 59490), (360, 57507), (435, 47592), (522, 39660), (540, 38338), (580, 35694), (661, 31320), (696, 29745), (783, 26440), (870, 23796), (1044, 19830), (1080, 19169), (1160, 17847), (1305, 15864), (1322, 15660), (1566, 13220), (1740, 11898), (1983, 10440), (2088, 9915), (2610, 7932), (2644, 7830), (3132, 6610), (3305, 6264), (3480, 5949), (3915, 5288), (3966, 5220)]