21102800

素因数分解:

$2^4\times 5^2\times {\mathrm{52757}}^1$

素因数の和:52775

約数の個数: 30

約数和(自身を含む): 50700438

約数和(自身を除く): 29597638

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52757, 105514, 211028, 263785, 422056, 527570, 844112, 1055140, 1318925, 2110280, 2637850, 4220560, 5275700, 10551400, 21102800]

約数ペア:

[(1, 21102800), (2, 10551400), (4, 5275700), (5, 4220560), (8, 2637850), (10, 2110280), (16, 1318925), (20, 1055140), (25, 844112), (40, 527570), (50, 422056), (80, 263785), (100, 211028), (200, 105514), (400, 52757)]