1618721960

素因数分解:

$2^3\times 5^1\times {\mathrm{3389}}^1\times {\mathrm{11941}}^1$

素因数の和:15341

約数の個数: 32

約数和(自身を含む): 3643504200

約数和(自身を除く): 2024782240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3389, 6778, 11941, 13556, 16945, 23882, 27112, 33890, 47764, 59705, 67780, 95528, 119410, 135560, 238820, 477640, 40468049, 80936098, 161872196, 202340245, 323744392, 404680490, 809360980, 1618721960]

約数ペア:

[(1, 1618721960), (2, 809360980), (4, 404680490), (5, 323744392), (8, 202340245), (10, 161872196), (20, 80936098), (40, 40468049), (3389, 477640), (6778, 238820), (11941, 135560), (13556, 119410), (16945, 95528), (23882, 67780), (27112, 59705), (33890, 47764)]