21372015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{2287}}^1$

素因数の和:2391

約数の個数: 32

約数和(自身を含む): 39536640

約数和(自身を除く): 18164625

約数列:

[1, 3, 5, 7, 15, 21, 35, 89, 105, 267, 445, 623, 1335, 1869, 2287, 3115, 6861, 9345, 11435, 16009, 34305, 48027, 80045, 203543, 240135, 610629, 1017715, 1424801, 3053145, 4274403, 7124005, 21372015]

約数ペア:

[(1, 21372015), (3, 7124005), (5, 4274403), (7, 3053145), (15, 1424801), (21, 1017715), (35, 610629), (89, 240135), (105, 203543), (267, 80045), (445, 48027), (623, 34305), (1335, 16009), (1869, 11435), (2287, 9345), (3115, 6861)]