21036210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53939}}^1$

素因数の和:53962

約数の個数: 32

約数和(自身を含む): 54371520

約数和(自身を除く): 33335310

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 53939, 107878, 161817, 269695, 323634, 539390, 701207, 809085, 1402414, 1618170, 2103621, 3506035, 4207242, 7012070, 10518105, 21036210]

約数ペア:

[(1, 21036210), (2, 10518105), (3, 7012070), (5, 4207242), (6, 3506035), (10, 2103621), (13, 1618170), (15, 1402414), (26, 809085), (30, 701207), (39, 539390), (65, 323634), (78, 269695), (130, 161817), (195, 107878), (390, 53939)]