21431835

素因数分解:

$3^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{743}}^1$

素因数の和:1395

約数の個数: 24

約数和(自身を含む): 37256544

約数和(自身を除く): 15824709

約数列:

[1, 3, 5, 9, 15, 45, 641, 743, 1923, 2229, 3205, 3715, 5769, 6687, 9615, 11145, 28845, 33435, 476263, 1428789, 2381315, 4286367, 7143945, 21431835]

約数ペア:

[(1, 21431835), (3, 7143945), (5, 4286367), (9, 2381315), (15, 1428789), (45, 476263), (641, 33435), (743, 28845), (1923, 11145), (2229, 9615), (3205, 6687), (3715, 5769)]