20585880

素因数分解:

$2^3\times 3^3\times 5^1\times 7^2\times {\mathrm{389}}^1$

素因数の和:423

約数の個数: 192

約数和(自身を含む): 80028000

約数和(自身を除く): 59442120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 49, 54, 56, 60, 63, 70, 72, 84, 90, 98, 105, 108, 120, 126, 135, 140, 147, 168, 180, 189, 196, 210, 216, 245, 252, 270, 280, 294, 315, 360, 378, 389, 392, 420, 441, 490, 504, 540, 588, 630, 735, 756, 778, 840, 882, 945, 980, 1080, 1167, 1176, 1260, 1323, 1470, 1512, 1556, 1764, 1890, 1945, 1960, 2205, 2334, 2520, 2646, 2723, 2940, 3112, 3501, 3528, 3780, 3890, 4410, 4668, 5292, 5446, 5835, 5880, 6615, 7002, 7560, 7780, 8169, 8820, 9336, 10503, 10584, 10892, 11670, 13230, 13615, 14004, 15560, 16338, 17505, 17640, 19061, 21006, 21784, 23340, 24507, 26460, 27230, 28008, 32676, 35010, 38122, 40845, 42012, 46680, 49014, 52515, 52920, 54460, 57183, 65352, 70020, 73521, 76244, 81690, 84024, 95305, 98028, 105030, 108920, 114366, 122535, 140040, 147042, 152488, 163380, 171549, 190610, 196056, 210060, 228732, 245070, 285915, 294084, 326760, 343098, 367605, 381220, 420120, 457464, 490140, 514647, 571830, 588168, 686196, 735210, 762440, 857745, 980280, 1029294, 1143660, 1372392, 1470420, 1715490, 2058588, 2287320, 2573235, 2940840, 3430980, 4117176, 5146470, 6861960, 10292940, 20585880]

約数ペア:

[(1, 20585880), (2, 10292940), (3, 6861960), (4, 5146470), (5, 4117176), (6, 3430980), (7, 2940840), (8, 2573235), (9, 2287320), (10, 2058588), (12, 1715490), (14, 1470420), (15, 1372392), (18, 1143660), (20, 1029294), (21, 980280), (24, 857745), (27, 762440), (28, 735210), (30, 686196), (35, 588168), (36, 571830), (40, 514647), (42, 490140), (45, 457464), (49, 420120), (54, 381220), (56, 367605), (60, 343098), (63, 326760), (70, 294084), (72, 285915), (84, 245070), (90, 228732), (98, 210060), (105, 196056), (108, 190610), (120, 171549), (126, 163380), (135, 152488), (140, 147042), (147, 140040), (168, 122535), (180, 114366), (189, 108920), (196, 105030), (210, 98028), (216, 95305), (245, 84024), (252, 81690), (270, 76244), (280, 73521), (294, 70020), (315, 65352), (360, 57183), (378, 54460), (389, 52920), (392, 52515), (420, 49014), (441, 46680), (490, 42012), (504, 40845), (540, 38122), (588, 35010), (630, 32676), (735, 28008), (756, 27230), (778, 26460), (840, 24507), (882, 23340), (945, 21784), (980, 21006), (1080, 19061), (1167, 17640), (1176, 17505), (1260, 16338), (1323, 15560), (1470, 14004), (1512, 13615), (1556, 13230), (1764, 11670), (1890, 10892), (1945, 10584), (1960, 10503), (2205, 9336), (2334, 8820), (2520, 8169), (2646, 7780), (2723, 7560), (2940, 7002), (3112, 6615), (3501, 5880), (3528, 5835), (3780, 5446), (3890, 5292), (4410, 4668)]