78710980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{95989}}^1$

素因数の和:96039

約数の個数: 24

約数和(自身を含む): 169326360

約数和(自身を除く): 90615380

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 95989, 191978, 383956, 479945, 959890, 1919780, 3935549, 7871098, 15742196, 19677745, 39355490, 78710980]

約数ペア:

[(1, 78710980), (2, 39355490), (4, 19677745), (5, 15742196), (10, 7871098), (20, 3935549), (41, 1919780), (82, 959890), (164, 479945), (205, 383956), (410, 191978), (820, 95989)]