21586880

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{419}}^1$

素因数の和:466

約数の個数: 112

約数和(自身を含む): 61447680

約数和(自身を除く): 39860800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 64, 70, 80, 92, 112, 115, 140, 160, 161, 184, 224, 230, 280, 320, 322, 368, 419, 448, 460, 560, 644, 736, 805, 838, 920, 1120, 1288, 1472, 1610, 1676, 1840, 2095, 2240, 2576, 2933, 3220, 3352, 3680, 4190, 5152, 5866, 6440, 6704, 7360, 8380, 9637, 10304, 11732, 12880, 13408, 14665, 16760, 19274, 23464, 25760, 26816, 29330, 33520, 38548, 46928, 48185, 51520, 58660, 67040, 67459, 77096, 93856, 96370, 117320, 134080, 134918, 154192, 187712, 192740, 234640, 269836, 308384, 337295, 385480, 469280, 539672, 616768, 674590, 770960, 938560, 1079344, 1349180, 1541920, 2158688, 2698360, 3083840, 4317376, 5396720, 10793440, 21586880]

約数ペア:

[(1, 21586880), (2, 10793440), (4, 5396720), (5, 4317376), (7, 3083840), (8, 2698360), (10, 2158688), (14, 1541920), (16, 1349180), (20, 1079344), (23, 938560), (28, 770960), (32, 674590), (35, 616768), (40, 539672), (46, 469280), (56, 385480), (64, 337295), (70, 308384), (80, 269836), (92, 234640), (112, 192740), (115, 187712), (140, 154192), (160, 134918), (161, 134080), (184, 117320), (224, 96370), (230, 93856), (280, 77096), (320, 67459), (322, 67040), (368, 58660), (419, 51520), (448, 48185), (460, 46928), (560, 38548), (644, 33520), (736, 29330), (805, 26816), (838, 25760), (920, 23464), (1120, 19274), (1288, 16760), (1472, 14665), (1610, 13408), (1676, 12880), (1840, 11732), (2095, 10304), (2240, 9637), (2576, 8380), (2933, 7360), (3220, 6704), (3352, 6440), (3680, 5866), (4190, 5152)]