21528320

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^2\times {\mathrm{139}}^1$

素因数の和:182

約数の個数: 108

約数和(自身を含む): 57088920

約数和(自身を除く): 35560600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 121, 128, 139, 160, 176, 220, 242, 256, 278, 320, 352, 440, 484, 556, 605, 640, 695, 704, 880, 968, 1112, 1210, 1280, 1390, 1408, 1529, 1760, 1936, 2224, 2420, 2780, 2816, 3058, 3520, 3872, 4448, 4840, 5560, 6116, 7040, 7645, 7744, 8896, 9680, 11120, 12232, 14080, 15290, 15488, 16819, 17792, 19360, 22240, 24464, 30580, 30976, 33638, 35584, 38720, 44480, 48928, 61160, 67276, 77440, 84095, 88960, 97856, 122320, 134552, 154880, 168190, 177920, 195712, 244640, 269104, 336380, 391424, 489280, 538208, 672760, 978560, 1076416, 1345520, 1957120, 2152832, 2691040, 4305664, 5382080, 10764160, 21528320]

約数ペア:

[(1, 21528320), (2, 10764160), (4, 5382080), (5, 4305664), (8, 2691040), (10, 2152832), (11, 1957120), (16, 1345520), (20, 1076416), (22, 978560), (32, 672760), (40, 538208), (44, 489280), (55, 391424), (64, 336380), (80, 269104), (88, 244640), (110, 195712), (121, 177920), (128, 168190), (139, 154880), (160, 134552), (176, 122320), (220, 97856), (242, 88960), (256, 84095), (278, 77440), (320, 67276), (352, 61160), (440, 48928), (484, 44480), (556, 38720), (605, 35584), (640, 33638), (695, 30976), (704, 30580), (880, 24464), (968, 22240), (1112, 19360), (1210, 17792), (1280, 16819), (1390, 15488), (1408, 15290), (1529, 14080), (1760, 12232), (1936, 11120), (2224, 9680), (2420, 8896), (2780, 7744), (2816, 7645), (3058, 7040), (3520, 6116), (3872, 5560), (4448, 4840)]