2187515

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1283}}^1$

素因数の和:1330

約数の個数: 16

約数和(自身を含む): 2958336

約数和(自身を除く): 770821

約数列:

[1, 5, 11, 31, 55, 155, 341, 1283, 1705, 6415, 14113, 39773, 70565, 198865, 437503, 2187515]

約数ペア:

[(1, 2187515), (5, 437503), (11, 198865), (31, 70565), (55, 39773), (155, 14113), (341, 6415), (1283, 1705)]