20034820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{307}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 45638208

約数和(自身を除く): 25603388

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 251, 260, 307, 502, 614, 1004, 1228, 1255, 1535, 2510, 3070, 3263, 3991, 5020, 6140, 6526, 7982, 13052, 15964, 16315, 19955, 32630, 39910, 65260, 77057, 79820, 154114, 308228, 385285, 770570, 1001741, 1541140, 2003482, 4006964, 5008705, 10017410, 20034820]

約数ペア:

[(1, 20034820), (2, 10017410), (4, 5008705), (5, 4006964), (10, 2003482), (13, 1541140), (20, 1001741), (26, 770570), (52, 385285), (65, 308228), (130, 154114), (251, 79820), (260, 77057), (307, 65260), (502, 39910), (614, 32630), (1004, 19955), (1228, 16315), (1255, 15964), (1535, 13052), (2510, 7982), (3070, 6526), (3263, 6140), (3991, 5020)]