21091320

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{331}}^1$

素因数の和:410

約数の個数: 128

約数和(自身を含む): 71712000

約数和(自身を除く): 50620680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 59, 60, 72, 90, 108, 118, 120, 135, 177, 180, 216, 236, 270, 295, 331, 354, 360, 472, 531, 540, 590, 662, 708, 885, 993, 1062, 1080, 1180, 1324, 1416, 1593, 1655, 1770, 1986, 2124, 2360, 2648, 2655, 2979, 3186, 3310, 3540, 3972, 4248, 4965, 5310, 5958, 6372, 6620, 7080, 7944, 7965, 8937, 9930, 10620, 11916, 12744, 13240, 14895, 15930, 17874, 19529, 19860, 21240, 23832, 29790, 31860, 35748, 39058, 39720, 44685, 58587, 59580, 63720, 71496, 78116, 89370, 97645, 117174, 119160, 156232, 175761, 178740, 195290, 234348, 292935, 351522, 357480, 390580, 468696, 527283, 585870, 703044, 781160, 878805, 1054566, 1171740, 1406088, 1757610, 2109132, 2343480, 2636415, 3515220, 4218264, 5272830, 7030440, 10545660, 21091320]

約数ペア:

[(1, 21091320), (2, 10545660), (3, 7030440), (4, 5272830), (5, 4218264), (6, 3515220), (8, 2636415), (9, 2343480), (10, 2109132), (12, 1757610), (15, 1406088), (18, 1171740), (20, 1054566), (24, 878805), (27, 781160), (30, 703044), (36, 585870), (40, 527283), (45, 468696), (54, 390580), (59, 357480), (60, 351522), (72, 292935), (90, 234348), (108, 195290), (118, 178740), (120, 175761), (135, 156232), (177, 119160), (180, 117174), (216, 97645), (236, 89370), (270, 78116), (295, 71496), (331, 63720), (354, 59580), (360, 58587), (472, 44685), (531, 39720), (540, 39058), (590, 35748), (662, 31860), (708, 29790), (885, 23832), (993, 21240), (1062, 19860), (1080, 19529), (1180, 17874), (1324, 15930), (1416, 14895), (1593, 13240), (1655, 12744), (1770, 11916), (1986, 10620), (2124, 9930), (2360, 8937), (2648, 7965), (2655, 7944), (2979, 7080), (3186, 6620), (3310, 6372), (3540, 5958), (3972, 5310), (4248, 4965)]