21135100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{277}}^1$

素因数の和:407

約数の個数: 72

約数和(自身を含む): 53086880

約数和(自身を除く): 31951780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 109, 140, 175, 218, 277, 350, 436, 545, 554, 700, 763, 1090, 1108, 1385, 1526, 1939, 2180, 2725, 2770, 3052, 3815, 3878, 5450, 5540, 6925, 7630, 7756, 9695, 10900, 13850, 15260, 19075, 19390, 27700, 30193, 38150, 38780, 48475, 60386, 76300, 96950, 120772, 150965, 193900, 211351, 301930, 422702, 603860, 754825, 845404, 1056755, 1509650, 2113510, 3019300, 4227020, 5283775, 10567550, 21135100]

約数ペア:

[(1, 21135100), (2, 10567550), (4, 5283775), (5, 4227020), (7, 3019300), (10, 2113510), (14, 1509650), (20, 1056755), (25, 845404), (28, 754825), (35, 603860), (50, 422702), (70, 301930), (100, 211351), (109, 193900), (140, 150965), (175, 120772), (218, 96950), (277, 76300), (350, 60386), (436, 48475), (545, 38780), (554, 38150), (700, 30193), (763, 27700), (1090, 19390), (1108, 19075), (1385, 15260), (1526, 13850), (1939, 10900), (2180, 9695), (2725, 7756), (2770, 7630), (3052, 6925), (3815, 5540), (3878, 5450)]