21450910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{1051}}^1$

素因数の和:1228

約数の個数: 32

約数和(自身を含む): 41886432

約数和(自身を除く): 20435522

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157, 314, 785, 1051, 1570, 2041, 2102, 4082, 5255, 10205, 10510, 13663, 20410, 27326, 68315, 136630, 165007, 330014, 825035, 1650070, 2145091, 4290182, 10725455, 21450910]

約数ペア:

[(1, 21450910), (2, 10725455), (5, 4290182), (10, 2145091), (13, 1650070), (26, 825035), (65, 330014), (130, 165007), (157, 136630), (314, 68315), (785, 27326), (1051, 20410), (1570, 13663), (2041, 10510), (2102, 10205), (4082, 5255)]