19720600

素因数分解:

$2^3\times 5^2\times {\mathrm{151}}^1\times {\mathrm{653}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 46224720

約数和(自身を除く): 26504120

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 151, 200, 302, 604, 653, 755, 1208, 1306, 1510, 2612, 3020, 3265, 3775, 5224, 6040, 6530, 7550, 13060, 15100, 16325, 26120, 30200, 32650, 65300, 98603, 130600, 197206, 394412, 493015, 788824, 986030, 1972060, 2465075, 3944120, 4930150, 9860300, 19720600]

約数ペア:

[(1, 19720600), (2, 9860300), (4, 4930150), (5, 3944120), (8, 2465075), (10, 1972060), (20, 986030), (25, 788824), (40, 493015), (50, 394412), (100, 197206), (151, 130600), (200, 98603), (302, 65300), (604, 32650), (653, 30200), (755, 26120), (1208, 16325), (1306, 15100), (1510, 13060), (2612, 7550), (3020, 6530), (3265, 6040), (3775, 5224)]