212872009

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{223}}^1$

素因数の和:397

約数の個数: 32

約数和(自身を含む): 260112384

約数和(自身を除く): 47240375

約数列:

[1, 7, 31, 53, 83, 217, 223, 371, 581, 1561, 1643, 2573, 4399, 6913, 11501, 11819, 18011, 18509, 30793, 48391, 82733, 129563, 136369, 366389, 573779, 954583, 980977, 2564723, 4016453, 6866839, 30410287, 212872009]

約数ペア:

[(1, 212872009), (7, 30410287), (31, 6866839), (53, 4016453), (83, 2564723), (217, 980977), (223, 954583), (371, 573779), (581, 366389), (1561, 136369), (1643, 129563), (2573, 82733), (4399, 48391), (6913, 30793), (11501, 18509), (11819, 18011)]