313575980

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{61007}}^1$

素因数の和:61273

約数の個数: 24

約数和(自身を含む): 661082688

約数和(自身を除く): 347506708

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 61007, 122014, 244028, 305035, 610070, 1220140, 15678799, 31357598, 62715196, 78393995, 156787990, 313575980]

約数ペア:

[(1, 313575980), (2, 156787990), (4, 78393995), (5, 62715196), (10, 31357598), (20, 15678799), (257, 1220140), (514, 610070), (1028, 305035), (1285, 244028), (2570, 122014), (5140, 61007)]