21485030

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{269}}^1$

素因数の和:453

約数の個数: 48

約数和(自身を含む): 45431280

約数和(自身を除く): 23946250

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 163, 245, 269, 326, 490, 538, 815, 1141, 1345, 1630, 1883, 2282, 2690, 3766, 5705, 7987, 9415, 11410, 13181, 15974, 18830, 26362, 39935, 43847, 65905, 79870, 87694, 131810, 219235, 306929, 438470, 613858, 1534645, 2148503, 3069290, 4297006, 10742515, 21485030]

約数ペア:

[(1, 21485030), (2, 10742515), (5, 4297006), (7, 3069290), (10, 2148503), (14, 1534645), (35, 613858), (49, 438470), (70, 306929), (98, 219235), (163, 131810), (245, 87694), (269, 79870), (326, 65905), (490, 43847), (538, 39935), (815, 26362), (1141, 18830), (1345, 15974), (1630, 13181), (1883, 11410), (2282, 9415), (2690, 7987), (3766, 5705)]