20930680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^2\times {\mathrm{283}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 48385080

約数和(自身を除く): 27454400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 283, 344, 430, 566, 860, 1132, 1415, 1720, 1849, 2264, 2830, 3698, 5660, 7396, 9245, 11320, 12169, 14792, 18490, 24338, 36980, 48676, 60845, 73960, 97352, 121690, 243380, 486760, 523267, 1046534, 2093068, 2616335, 4186136, 5232670, 10465340, 20930680]

約数ペア:

[(1, 20930680), (2, 10465340), (4, 5232670), (5, 4186136), (8, 2616335), (10, 2093068), (20, 1046534), (40, 523267), (43, 486760), (86, 243380), (172, 121690), (215, 97352), (283, 73960), (344, 60845), (430, 48676), (566, 36980), (860, 24338), (1132, 18490), (1415, 14792), (1720, 12169), (1849, 11320), (2264, 9245), (2830, 7396), (3698, 5660)]