20720350

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1117}}^1$

素因数の和:1189

約数の個数: 48

約数和(自身を含む): 44916768

約数和(自身を除く): 24196418

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 53, 70, 106, 175, 265, 350, 371, 530, 742, 1117, 1325, 1855, 2234, 2650, 3710, 5585, 7819, 9275, 11170, 15638, 18550, 27925, 39095, 55850, 59201, 78190, 118402, 195475, 296005, 390950, 414407, 592010, 828814, 1480025, 2072035, 2960050, 4144070, 10360175, 20720350]

約数ペア:

[(1, 20720350), (2, 10360175), (5, 4144070), (7, 2960050), (10, 2072035), (14, 1480025), (25, 828814), (35, 592010), (50, 414407), (53, 390950), (70, 296005), (106, 195475), (175, 118402), (265, 78190), (350, 59201), (371, 55850), (530, 39095), (742, 27925), (1117, 18550), (1325, 15638), (1855, 11170), (2234, 9275), (2650, 7819), (3710, 5585)]