21561806

素因数分解:

$2^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1\times {\mathrm{181}}^1$

素因数の和:384

約数の個数: 32

約数和(自身を含む): 38019072

約数和(自身を除く): 16457266

約数列:

[1, 2, 7, 14, 67, 127, 134, 181, 254, 362, 469, 889, 938, 1267, 1778, 2534, 8509, 12127, 17018, 22987, 24254, 45974, 59563, 84889, 119126, 160909, 169778, 321818, 1540129, 3080258, 10780903, 21561806]

約数ペア:

[(1, 21561806), (2, 10780903), (7, 3080258), (14, 1540129), (67, 321818), (127, 169778), (134, 160909), (181, 119126), (254, 84889), (362, 59563), (469, 45974), (889, 24254), (938, 22987), (1267, 17018), (1778, 12127), (2534, 8509)]