21018837

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{389}}^1$

素因数の和:513

約数の個数: 32

約数和(自身を含む): 33546240

約数和(自身を除く): 12527403

約数列:

[1, 3, 7, 21, 31, 83, 93, 217, 249, 389, 581, 651, 1167, 1743, 2573, 2723, 7719, 8169, 12059, 18011, 32287, 36177, 54033, 84413, 96861, 226009, 253239, 678027, 1000897, 3002691, 7006279, 21018837]

約数ペア:

[(1, 21018837), (3, 7006279), (7, 3002691), (21, 1000897), (31, 678027), (83, 253239), (93, 226009), (217, 96861), (249, 84413), (389, 54033), (581, 36177), (651, 32287), (1167, 18011), (1743, 12059), (2573, 8169), (2723, 7719)]