21525315

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:452

約数の個数: 64

約数和(自身を含む): 43130880

約数和(自身を除く): 21605565

約数列:

[1, 3, 5, 7, 15, 17, 21, 31, 35, 51, 85, 93, 105, 119, 155, 217, 255, 357, 389, 465, 527, 595, 651, 1085, 1167, 1581, 1785, 1945, 2635, 2723, 3255, 3689, 5835, 6613, 7905, 8169, 11067, 12059, 13615, 18445, 19839, 33065, 36177, 40845, 46291, 55335, 60295, 84413, 99195, 138873, 180885, 205003, 231455, 253239, 422065, 615009, 694365, 1025015, 1266195, 1435021, 3075045, 4305063, 7175105, 21525315]

約数ペア:

[(1, 21525315), (3, 7175105), (5, 4305063), (7, 3075045), (15, 1435021), (17, 1266195), (21, 1025015), (31, 694365), (35, 615009), (51, 422065), (85, 253239), (93, 231455), (105, 205003), (119, 180885), (155, 138873), (217, 99195), (255, 84413), (357, 60295), (389, 55335), (465, 46291), (527, 40845), (595, 36177), (651, 33065), (1085, 19839), (1167, 18445), (1581, 13615), (1785, 12059), (1945, 11067), (2635, 8169), (2723, 7905), (3255, 6613), (3689, 5835)]