21081550

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:146

約数の個数: 96

約数和(自身を含む): 48568320

約数和(自身を除く): 27486770

約数列:

[1, 2, 5, 7, 10, 14, 25, 29, 31, 35, 50, 58, 62, 67, 70, 134, 145, 155, 175, 203, 217, 290, 310, 335, 350, 406, 434, 469, 670, 725, 775, 899, 938, 1015, 1085, 1450, 1550, 1675, 1798, 1943, 2030, 2077, 2170, 2345, 3350, 3886, 4154, 4495, 4690, 5075, 5425, 6293, 8990, 9715, 10150, 10385, 10850, 11725, 12586, 13601, 14539, 19430, 20770, 22475, 23450, 27202, 29078, 31465, 44950, 48575, 51925, 60233, 62930, 68005, 72695, 97150, 103850, 120466, 136010, 145390, 157325, 301165, 314650, 340025, 363475, 421631, 602330, 680050, 726950, 843262, 1505825, 2108155, 3011650, 4216310, 10540775, 21081550]

約数ペア:

[(1, 21081550), (2, 10540775), (5, 4216310), (7, 3011650), (10, 2108155), (14, 1505825), (25, 843262), (29, 726950), (31, 680050), (35, 602330), (50, 421631), (58, 363475), (62, 340025), (67, 314650), (70, 301165), (134, 157325), (145, 145390), (155, 136010), (175, 120466), (203, 103850), (217, 97150), (290, 72695), (310, 68005), (335, 62930), (350, 60233), (406, 51925), (434, 48575), (469, 44950), (670, 31465), (725, 29078), (775, 27202), (899, 23450), (938, 22475), (1015, 20770), (1085, 19430), (1450, 14539), (1550, 13601), (1675, 12586), (1798, 11725), (1943, 10850), (2030, 10385), (2077, 10150), (2170, 9715), (2345, 8990), (3350, 6293), (3886, 5425), (4154, 5075), (4495, 4690)]