64813780

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1\times {\mathrm{431}}^1$

素因数の和:616

約数の個数: 48

約数和(自身を含む): 139636224

約数和(自身を除く): 74822444

約数列:

[1, 2, 4, 5, 10, 20, 73, 103, 146, 206, 292, 365, 412, 431, 515, 730, 862, 1030, 1460, 1724, 2060, 2155, 4310, 7519, 8620, 15038, 30076, 31463, 37595, 44393, 62926, 75190, 88786, 125852, 150380, 157315, 177572, 221965, 314630, 443930, 629260, 887860, 3240689, 6481378, 12962756, 16203445, 32406890, 64813780]

約数ペア:

[(1, 64813780), (2, 32406890), (4, 16203445), (5, 12962756), (10, 6481378), (20, 3240689), (73, 887860), (103, 629260), (146, 443930), (206, 314630), (292, 221965), (365, 177572), (412, 157315), (431, 150380), (515, 125852), (730, 88786), (862, 75190), (1030, 62926), (1460, 44393), (1724, 37595), (2060, 31463), (2155, 30076), (4310, 15038), (7519, 8620)]