21815640

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{787}}^1$

素因数の和:822

約数の個数: 192

約数和(自身を含む): 88508160

約数和(自身を除く): 66692520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 24, 28, 30, 33, 35, 36, 40, 42, 44, 45, 55, 56, 60, 63, 66, 70, 72, 77, 84, 88, 90, 99, 105, 110, 120, 126, 132, 140, 154, 165, 168, 180, 198, 210, 220, 231, 252, 264, 280, 308, 315, 330, 360, 385, 396, 420, 440, 462, 495, 504, 616, 630, 660, 693, 770, 787, 792, 840, 924, 990, 1155, 1260, 1320, 1386, 1540, 1574, 1848, 1980, 2310, 2361, 2520, 2772, 3080, 3148, 3465, 3935, 3960, 4620, 4722, 5509, 5544, 6296, 6930, 7083, 7870, 8657, 9240, 9444, 11018, 11805, 13860, 14166, 15740, 16527, 17314, 18888, 22036, 23610, 25971, 27545, 27720, 28332, 31480, 33054, 34628, 35415, 43285, 44072, 47220, 49581, 51942, 55090, 56664, 60599, 66108, 69256, 70830, 77913, 82635, 86570, 94440, 99162, 103884, 110180, 121198, 129855, 132216, 141660, 155826, 165270, 173140, 181797, 198324, 207768, 220360, 242396, 247905, 259710, 283320, 302995, 311652, 330540, 346280, 363594, 389565, 396648, 484792, 495810, 519420, 545391, 605990, 623304, 661080, 727188, 779130, 908985, 991620, 1038840, 1090782, 1211980, 1454376, 1558260, 1817970, 1983240, 2181564, 2423960, 2726955, 3116520, 3635940, 4363128, 5453910, 7271880, 10907820, 21815640]

約数ペア:

[(1, 21815640), (2, 10907820), (3, 7271880), (4, 5453910), (5, 4363128), (6, 3635940), (7, 3116520), (8, 2726955), (9, 2423960), (10, 2181564), (11, 1983240), (12, 1817970), (14, 1558260), (15, 1454376), (18, 1211980), (20, 1090782), (21, 1038840), (22, 991620), (24, 908985), (28, 779130), (30, 727188), (33, 661080), (35, 623304), (36, 605990), (40, 545391), (42, 519420), (44, 495810), (45, 484792), (55, 396648), (56, 389565), (60, 363594), (63, 346280), (66, 330540), (70, 311652), (72, 302995), (77, 283320), (84, 259710), (88, 247905), (90, 242396), (99, 220360), (105, 207768), (110, 198324), (120, 181797), (126, 173140), (132, 165270), (140, 155826), (154, 141660), (165, 132216), (168, 129855), (180, 121198), (198, 110180), (210, 103884), (220, 99162), (231, 94440), (252, 86570), (264, 82635), (280, 77913), (308, 70830), (315, 69256), (330, 66108), (360, 60599), (385, 56664), (396, 55090), (420, 51942), (440, 49581), (462, 47220), (495, 44072), (504, 43285), (616, 35415), (630, 34628), (660, 33054), (693, 31480), (770, 28332), (787, 27720), (792, 27545), (840, 25971), (924, 23610), (990, 22036), (1155, 18888), (1260, 17314), (1320, 16527), (1386, 15740), (1540, 14166), (1574, 13860), (1848, 11805), (1980, 11018), (2310, 9444), (2361, 9240), (2520, 8657), (2772, 7870), (3080, 7083), (3148, 6930), (3465, 6296), (3935, 5544), (3960, 5509), (4620, 4722)]