20689370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2609}}^1$

素因数の和:2690

約数の個数: 32

約数和(自身を含む): 40778640

約数和(自身を除く): 20089270

約数列:

[1, 2, 5, 10, 13, 26, 61, 65, 122, 130, 305, 610, 793, 1586, 2609, 3965, 5218, 7930, 13045, 26090, 33917, 67834, 159149, 169585, 318298, 339170, 795745, 1591490, 2068937, 4137874, 10344685, 20689370]

約数ペア:

[(1, 20689370), (2, 10344685), (5, 4137874), (10, 2068937), (13, 1591490), (26, 795745), (61, 339170), (65, 318298), (122, 169585), (130, 159149), (305, 67834), (610, 33917), (793, 26090), (1586, 13045), (2609, 7930), (3965, 5218)]