20124460

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 43868160

約数和(自身を除く): 23743700

約数列:

[1, 2, 4, 5, 10, 20, 47, 79, 94, 158, 188, 235, 271, 316, 395, 470, 542, 790, 940, 1084, 1355, 1580, 2710, 3713, 5420, 7426, 12737, 14852, 18565, 21409, 25474, 37130, 42818, 50948, 63685, 74260, 85636, 107045, 127370, 214090, 254740, 428180, 1006223, 2012446, 4024892, 5031115, 10062230, 20124460]

約数ペア:

[(1, 20124460), (2, 10062230), (4, 5031115), (5, 4024892), (10, 2012446), (20, 1006223), (47, 428180), (79, 254740), (94, 214090), (158, 127370), (188, 107045), (235, 85636), (271, 74260), (316, 63685), (395, 50948), (470, 42818), (542, 37130), (790, 25474), (940, 21409), (1084, 18565), (1355, 14852), (1580, 12737), (2710, 7426), (3713, 5420)]