20159080

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 47647440

約数和(自身を除く): 27488360

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 53, 74, 106, 148, 185, 212, 257, 265, 296, 370, 424, 514, 530, 740, 1028, 1060, 1285, 1480, 1961, 2056, 2120, 2570, 3922, 5140, 7844, 9509, 9805, 10280, 13621, 15688, 19018, 19610, 27242, 38036, 39220, 47545, 54484, 68105, 76072, 78440, 95090, 108968, 136210, 190180, 272420, 380360, 503977, 544840, 1007954, 2015908, 2519885, 4031816, 5039770, 10079540, 20159080]

約数ペア:

[(1, 20159080), (2, 10079540), (4, 5039770), (5, 4031816), (8, 2519885), (10, 2015908), (20, 1007954), (37, 544840), (40, 503977), (53, 380360), (74, 272420), (106, 190180), (148, 136210), (185, 108968), (212, 95090), (257, 78440), (265, 76072), (296, 68105), (370, 54484), (424, 47545), (514, 39220), (530, 38036), (740, 27242), (1028, 19610), (1060, 19018), (1285, 15688), (1480, 13621), (1961, 10280), (2056, 9805), (2120, 9509), (2570, 7844), (3922, 5140)]