21785160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{181}}^1$

素因数の和:271

約数の個数: 128

約数和(自身を含む): 70761600

約数和(自身を除く): 48976440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 59, 60, 68, 85, 102, 118, 120, 136, 170, 177, 181, 204, 236, 255, 295, 340, 354, 362, 408, 472, 510, 543, 590, 680, 708, 724, 885, 905, 1003, 1020, 1086, 1180, 1416, 1448, 1770, 1810, 2006, 2040, 2172, 2360, 2715, 3009, 3077, 3540, 3620, 4012, 4344, 5015, 5430, 6018, 6154, 7080, 7240, 8024, 9231, 10030, 10679, 10860, 12036, 12308, 15045, 15385, 18462, 20060, 21358, 21720, 24072, 24616, 30090, 30770, 32037, 36924, 40120, 42716, 46155, 53395, 60180, 61540, 64074, 73848, 85432, 92310, 106790, 120360, 123080, 128148, 160185, 181543, 184620, 213580, 256296, 320370, 363086, 369240, 427160, 544629, 640740, 726172, 907715, 1089258, 1281480, 1452344, 1815430, 2178516, 2723145, 3630860, 4357032, 5446290, 7261720, 10892580, 21785160]

約数ペア:

[(1, 21785160), (2, 10892580), (3, 7261720), (4, 5446290), (5, 4357032), (6, 3630860), (8, 2723145), (10, 2178516), (12, 1815430), (15, 1452344), (17, 1281480), (20, 1089258), (24, 907715), (30, 726172), (34, 640740), (40, 544629), (51, 427160), (59, 369240), (60, 363086), (68, 320370), (85, 256296), (102, 213580), (118, 184620), (120, 181543), (136, 160185), (170, 128148), (177, 123080), (181, 120360), (204, 106790), (236, 92310), (255, 85432), (295, 73848), (340, 64074), (354, 61540), (362, 60180), (408, 53395), (472, 46155), (510, 42716), (543, 40120), (590, 36924), (680, 32037), (708, 30770), (724, 30090), (885, 24616), (905, 24072), (1003, 21720), (1020, 21358), (1086, 20060), (1180, 18462), (1416, 15385), (1448, 15045), (1770, 12308), (1810, 12036), (2006, 10860), (2040, 10679), (2172, 10030), (2360, 9231), (2715, 8024), (3009, 7240), (3077, 7080), (3540, 6154), (3620, 6018), (4012, 5430), (4344, 5015)]