21084315520

素因数分解:

$2^7\times 5^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{7649}}^1$

素因数の和:7800

約数の個数: 128

約数和(自身を含む): 51967980000

約数和(自身を除く): 30883664480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 64, 73, 80, 118, 128, 146, 160, 236, 292, 295, 320, 365, 472, 584, 590, 640, 730, 944, 1168, 1180, 1460, 1888, 2336, 2360, 2920, 3776, 4307, 4672, 4720, 5840, 7552, 7649, 8614, 9344, 9440, 11680, 15298, 17228, 18880, 21535, 23360, 30596, 34456, 37760, 38245, 43070, 46720, 61192, 68912, 76490, 86140, 122384, 137824, 152980, 172280, 244768, 275648, 305960, 344560, 451291, 489536, 551296, 558377, 611920, 689120, 902582, 979072, 1116754, 1223840, 1378240, 1805164, 2233508, 2256455, 2447680, 2756480, 2791885, 3610328, 4467016, 4512910, 4895360, 5583770, 7220656, 8934032, 9025820, 11167540, 14441312, 17868064, 18051640, 22335080, 28882624, 32944243, 35736128, 36103280, 44670160, 57765248, 65888486, 71472256, 72206560, 89340320, 131776972, 144413120, 164721215, 178680640, 263553944, 288826240, 329442430, 357361280, 527107888, 658884860, 1054215776, 1317769720, 2108431552, 2635539440, 4216863104, 5271078880, 10542157760, 21084315520]

約数ペア:

[(1, 21084315520), (2, 10542157760), (4, 5271078880), (5, 4216863104), (8, 2635539440), (10, 2108431552), (16, 1317769720), (20, 1054215776), (32, 658884860), (40, 527107888), (59, 357361280), (64, 329442430), (73, 288826240), (80, 263553944), (118, 178680640), (128, 164721215), (146, 144413120), (160, 131776972), (236, 89340320), (292, 72206560), (295, 71472256), (320, 65888486), (365, 57765248), (472, 44670160), (584, 36103280), (590, 35736128), (640, 32944243), (730, 28882624), (944, 22335080), (1168, 18051640), (1180, 17868064), (1460, 14441312), (1888, 11167540), (2336, 9025820), (2360, 8934032), (2920, 7220656), (3776, 5583770), (4307, 4895360), (4672, 4512910), (4720, 4467016), (5840, 3610328), (7552, 2791885), (7649, 2756480), (8614, 2447680), (9344, 2256455), (9440, 2233508), (11680, 1805164), (15298, 1378240), (17228, 1223840), (18880, 1116754), (21535, 979072), (23360, 902582), (30596, 689120), (34456, 611920), (37760, 558377), (38245, 551296), (43070, 489536), (46720, 451291), (61192, 344560), (68912, 305960), (76490, 275648), (86140, 244768), (122384, 172280), (137824, 152980)]