21307320

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1$

素因数の和:310

約数の個数: 128

約数和(自身を含む): 72072000

約数和(自身を除く): 50764680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 109, 120, 135, 180, 181, 216, 218, 270, 327, 360, 362, 436, 540, 543, 545, 654, 724, 872, 905, 981, 1080, 1086, 1090, 1308, 1448, 1629, 1635, 1810, 1962, 2172, 2180, 2616, 2715, 2943, 3258, 3270, 3620, 3924, 4344, 4360, 4887, 4905, 5430, 5886, 6516, 6540, 7240, 7848, 8145, 9774, 9810, 10860, 11772, 13032, 13080, 14715, 16290, 19548, 19620, 19729, 21720, 23544, 24435, 29430, 32580, 39096, 39240, 39458, 48870, 58860, 59187, 65160, 78916, 97740, 98645, 117720, 118374, 157832, 177561, 195480, 197290, 236748, 295935, 355122, 394580, 473496, 532683, 591870, 710244, 789160, 887805, 1065366, 1183740, 1420488, 1775610, 2130732, 2367480, 2663415, 3551220, 4261464, 5326830, 7102440, 10653660, 21307320]

約数ペア:

[(1, 21307320), (2, 10653660), (3, 7102440), (4, 5326830), (5, 4261464), (6, 3551220), (8, 2663415), (9, 2367480), (10, 2130732), (12, 1775610), (15, 1420488), (18, 1183740), (20, 1065366), (24, 887805), (27, 789160), (30, 710244), (36, 591870), (40, 532683), (45, 473496), (54, 394580), (60, 355122), (72, 295935), (90, 236748), (108, 197290), (109, 195480), (120, 177561), (135, 157832), (180, 118374), (181, 117720), (216, 98645), (218, 97740), (270, 78916), (327, 65160), (360, 59187), (362, 58860), (436, 48870), (540, 39458), (543, 39240), (545, 39096), (654, 32580), (724, 29430), (872, 24435), (905, 23544), (981, 21720), (1080, 19729), (1086, 19620), (1090, 19548), (1308, 16290), (1448, 14715), (1629, 13080), (1635, 13032), (1810, 11772), (1962, 10860), (2172, 9810), (2180, 9774), (2616, 8145), (2715, 7848), (2943, 7240), (3258, 6540), (3270, 6516), (3620, 5886), (3924, 5430), (4344, 4905), (4360, 4887)]