20578116

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 53084640

約数和(自身を除く): 32506524

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 73, 78, 139, 146, 156, 169, 219, 278, 292, 338, 417, 438, 507, 556, 676, 834, 876, 949, 1014, 1668, 1807, 1898, 2028, 2847, 3614, 3796, 5421, 5694, 7228, 10147, 10842, 11388, 12337, 20294, 21684, 23491, 24674, 30441, 37011, 40588, 46982, 49348, 60882, 70473, 74022, 93964, 121764, 131911, 140946, 148044, 263822, 281892, 395733, 527644, 791466, 1582932, 1714843, 3429686, 5144529, 6859372, 10289058, 20578116]

約数ペア:

[(1, 20578116), (2, 10289058), (3, 6859372), (4, 5144529), (6, 3429686), (12, 1714843), (13, 1582932), (26, 791466), (39, 527644), (52, 395733), (73, 281892), (78, 263822), (139, 148044), (146, 140946), (156, 131911), (169, 121764), (219, 93964), (278, 74022), (292, 70473), (338, 60882), (417, 49348), (438, 46982), (507, 40588), (556, 37011), (676, 30441), (834, 24674), (876, 23491), (949, 21684), (1014, 20294), (1668, 12337), (1807, 11388), (1898, 10842), (2028, 10147), (2847, 7228), (3614, 5694), (3796, 5421)]