20065005

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 36391680

約数和(自身を除く): 16326675

約数列:

[1, 3, 5, 9, 15, 45, 47, 53, 141, 159, 179, 235, 265, 423, 477, 537, 705, 795, 895, 1611, 2115, 2385, 2491, 2685, 7473, 8055, 8413, 9487, 12455, 22419, 25239, 28461, 37365, 42065, 47435, 75717, 85383, 112095, 126195, 142305, 378585, 426915, 445889, 1337667, 2229445, 4013001, 6688335, 20065005]

約数ペア:

[(1, 20065005), (3, 6688335), (5, 4013001), (9, 2229445), (15, 1337667), (45, 445889), (47, 426915), (53, 378585), (141, 142305), (159, 126195), (179, 112095), (235, 85383), (265, 75717), (423, 47435), (477, 42065), (537, 37365), (705, 28461), (795, 25239), (895, 22419), (1611, 12455), (2115, 9487), (2385, 8413), (2491, 8055), (2685, 7473)]