642186460

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{257}}^1\times {\mathrm{1213}}^1$

素因数の和:1582

約数の個数: 48

約数和(自身を含む): 1368110016

約数和(自身を除く): 725923556

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 257, 412, 514, 515, 1028, 1030, 1213, 1285, 2060, 2426, 2570, 4852, 5140, 6065, 12130, 24260, 26471, 52942, 105884, 124939, 132355, 249878, 264710, 311741, 499756, 529420, 623482, 624695, 1246964, 1249390, 1558705, 2498780, 3117410, 6234820, 32109323, 64218646, 128437292, 160546615, 321093230, 642186460]

約数ペア:

[(1, 642186460), (2, 321093230), (4, 160546615), (5, 128437292), (10, 64218646), (20, 32109323), (103, 6234820), (206, 3117410), (257, 2498780), (412, 1558705), (514, 1249390), (515, 1246964), (1028, 624695), (1030, 623482), (1213, 529420), (1285, 499756), (2060, 311741), (2426, 264710), (2570, 249878), (4852, 132355), (5140, 124939), (6065, 105884), (12130, 52942), (24260, 26471)]