81372005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1559}}^1$

素因数の和:1661

約数の個数: 32

約数和(自身を含む): 116363520

約数和(自身を除く): 34991515

約数列:

[1, 5, 11, 13, 55, 65, 73, 143, 365, 715, 803, 949, 1559, 4015, 4745, 7795, 10439, 17149, 20267, 52195, 85745, 101335, 113807, 222937, 569035, 1114685, 1251877, 1479491, 6259385, 7397455, 16274401, 81372005]

約数ペア:

[(1, 81372005), (5, 16274401), (11, 7397455), (13, 6259385), (55, 1479491), (65, 1251877), (73, 1114685), (143, 569035), (365, 222937), (715, 113807), (803, 101335), (949, 85745), (1559, 52195), (4015, 20267), (4745, 17149), (7795, 10439)]