15661580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{277}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 36148896

約数和(自身を除く): 20487316

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 257, 277, 514, 554, 1028, 1108, 1285, 1385, 2570, 2770, 2827, 3047, 5140, 5540, 5654, 6094, 11308, 12188, 14135, 15235, 28270, 30470, 56540, 60940, 71189, 142378, 284756, 355945, 711890, 783079, 1423780, 1566158, 3132316, 3915395, 7830790, 15661580]

約数ペア:

[(1, 15661580), (2, 7830790), (4, 3915395), (5, 3132316), (10, 1566158), (11, 1423780), (20, 783079), (22, 711890), (44, 355945), (55, 284756), (110, 142378), (220, 71189), (257, 60940), (277, 56540), (514, 30470), (554, 28270), (1028, 15235), (1108, 14135), (1285, 12188), (1385, 11308), (2570, 6094), (2770, 5654), (2827, 5540), (3047, 5140)]