81081420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{193051}}^1$

素因数の和:193070

約数の個数: 48

約数和(自身を含む): 259461888

約数和(自身を除く): 178380468

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 193051, 386102, 579153, 772204, 965255, 1158306, 1351357, 1930510, 2316612, 2702714, 2895765, 3861020, 4054071, 5405428, 5791530, 6756785, 8108142, 11583060, 13513570, 16216284, 20270355, 27027140, 40540710, 81081420]

約数ペア:

[(1, 81081420), (2, 40540710), (3, 27027140), (4, 20270355), (5, 16216284), (6, 13513570), (7, 11583060), (10, 8108142), (12, 6756785), (14, 5791530), (15, 5405428), (20, 4054071), (21, 3861020), (28, 2895765), (30, 2702714), (35, 2316612), (42, 1930510), (60, 1351357), (70, 1158306), (84, 965255), (105, 772204), (140, 579153), (210, 386102), (420, 193051)]