21192840

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:265

約数の個数: 160

約数和(自身を含む): 73877760

約数和(自身を除く): 52684920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 31, 36, 40, 45, 54, 60, 62, 72, 81, 90, 93, 108, 120, 124, 135, 155, 162, 180, 186, 211, 216, 248, 270, 279, 310, 324, 360, 372, 405, 422, 465, 540, 558, 620, 633, 648, 744, 810, 837, 844, 930, 1055, 1080, 1116, 1240, 1266, 1395, 1620, 1674, 1688, 1860, 1899, 2110, 2232, 2511, 2532, 2790, 3165, 3240, 3348, 3720, 3798, 4185, 4220, 5022, 5064, 5580, 5697, 6330, 6541, 6696, 7596, 8370, 8440, 9495, 10044, 11160, 11394, 12555, 12660, 13082, 15192, 16740, 17091, 18990, 19623, 20088, 22788, 25110, 25320, 26164, 28485, 32705, 33480, 34182, 37980, 39246, 45576, 50220, 52328, 56970, 58869, 65410, 68364, 75960, 78492, 85455, 98115, 100440, 113940, 117738, 130820, 136728, 156984, 170910, 176607, 196230, 227880, 235476, 261640, 294345, 341820, 353214, 392460, 470952, 529821, 588690, 683640, 706428, 784920, 883035, 1059642, 1177380, 1412856, 1766070, 2119284, 2354760, 2649105, 3532140, 4238568, 5298210, 7064280, 10596420, 21192840]

約数ペア:

[(1, 21192840), (2, 10596420), (3, 7064280), (4, 5298210), (5, 4238568), (6, 3532140), (8, 2649105), (9, 2354760), (10, 2119284), (12, 1766070), (15, 1412856), (18, 1177380), (20, 1059642), (24, 883035), (27, 784920), (30, 706428), (31, 683640), (36, 588690), (40, 529821), (45, 470952), (54, 392460), (60, 353214), (62, 341820), (72, 294345), (81, 261640), (90, 235476), (93, 227880), (108, 196230), (120, 176607), (124, 170910), (135, 156984), (155, 136728), (162, 130820), (180, 117738), (186, 113940), (211, 100440), (216, 98115), (248, 85455), (270, 78492), (279, 75960), (310, 68364), (324, 65410), (360, 58869), (372, 56970), (405, 52328), (422, 50220), (465, 45576), (540, 39246), (558, 37980), (620, 34182), (633, 33480), (648, 32705), (744, 28485), (810, 26164), (837, 25320), (844, 25110), (930, 22788), (1055, 20088), (1080, 19623), (1116, 18990), (1240, 17091), (1266, 16740), (1395, 15192), (1620, 13082), (1674, 12660), (1688, 12555), (1860, 11394), (1899, 11160), (2110, 10044), (2232, 9495), (2511, 8440), (2532, 8370), (2790, 7596), (3165, 6696), (3240, 6541), (3348, 6330), (3720, 5697), (3798, 5580), (4185, 5064), (4220, 5022)]