28570760

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{3203}}^1$

素因数の和:3437

約数の個数: 32

約数和(自身を含む): 64592640

約数和(自身を除く): 36021880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 3203, 4460, 6406, 8920, 12812, 16015, 25624, 32030, 64060, 128120, 714269, 1428538, 2857076, 3571345, 5714152, 7142690, 14285380, 28570760]

約数ペア:

[(1, 28570760), (2, 14285380), (4, 7142690), (5, 5714152), (8, 3571345), (10, 2857076), (20, 1428538), (40, 714269), (223, 128120), (446, 64060), (892, 32030), (1115, 25624), (1784, 16015), (2230, 12812), (3203, 8920), (4460, 6406)]