21573720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{1223}}^1$

素因数の和:1254

約数の個数: 144

約数和(自身を含む): 81628560

約数和(自身を除く): 60054840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 49, 56, 60, 63, 70, 72, 84, 90, 98, 105, 120, 126, 140, 147, 168, 180, 196, 210, 245, 252, 280, 294, 315, 360, 392, 420, 441, 490, 504, 588, 630, 735, 840, 882, 980, 1176, 1223, 1260, 1470, 1764, 1960, 2205, 2446, 2520, 2940, 3528, 3669, 4410, 4892, 5880, 6115, 7338, 8561, 8820, 9784, 11007, 12230, 14676, 17122, 17640, 18345, 22014, 24460, 25683, 29352, 34244, 36690, 42805, 44028, 48920, 51366, 55035, 59927, 68488, 73380, 77049, 85610, 88056, 102732, 110070, 119854, 128415, 146760, 154098, 171220, 179781, 205464, 220140, 239708, 256830, 299635, 308196, 342440, 359562, 385245, 440280, 479416, 513660, 539343, 599270, 616392, 719124, 770490, 898905, 1027320, 1078686, 1198540, 1438248, 1540980, 1797810, 2157372, 2397080, 2696715, 3081960, 3595620, 4314744, 5393430, 7191240, 10786860, 21573720]

約数ペア:

[(1, 21573720), (2, 10786860), (3, 7191240), (4, 5393430), (5, 4314744), (6, 3595620), (7, 3081960), (8, 2696715), (9, 2397080), (10, 2157372), (12, 1797810), (14, 1540980), (15, 1438248), (18, 1198540), (20, 1078686), (21, 1027320), (24, 898905), (28, 770490), (30, 719124), (35, 616392), (36, 599270), (40, 539343), (42, 513660), (45, 479416), (49, 440280), (56, 385245), (60, 359562), (63, 342440), (70, 308196), (72, 299635), (84, 256830), (90, 239708), (98, 220140), (105, 205464), (120, 179781), (126, 171220), (140, 154098), (147, 146760), (168, 128415), (180, 119854), (196, 110070), (210, 102732), (245, 88056), (252, 85610), (280, 77049), (294, 73380), (315, 68488), (360, 59927), (392, 55035), (420, 51366), (441, 48920), (490, 44028), (504, 42805), (588, 36690), (630, 34244), (735, 29352), (840, 25683), (882, 24460), (980, 22014), (1176, 18345), (1223, 17640), (1260, 17122), (1470, 14676), (1764, 12230), (1960, 11007), (2205, 9784), (2446, 8820), (2520, 8561), (2940, 7338), (3528, 6115), (3669, 5880), (4410, 4892)]