77804020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{555743}}^1$

素因数の和:555759

約数の個数: 24

約数和(自身を含む): 186729984

約数和(自身を除く): 108925964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 555743, 1111486, 2222972, 2778715, 3890201, 5557430, 7780402, 11114860, 15560804, 19451005, 38902010, 77804020]

約数ペア:

[(1, 77804020), (2, 38902010), (4, 19451005), (5, 15560804), (7, 11114860), (10, 7780402), (14, 5557430), (20, 3890201), (28, 2778715), (35, 2222972), (70, 1111486), (140, 555743)]