18190978

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{307}}^1$

素因数の和:418

約数の個数: 32

約数和(自身を含む): 30735936

約数和(自身を除く): 12544958

約数列:

[1, 2, 13, 26, 43, 53, 86, 106, 307, 559, 614, 689, 1118, 1378, 2279, 3991, 4558, 7982, 13201, 16271, 26402, 29627, 32542, 59254, 171613, 211523, 343226, 423046, 699653, 1399306, 9095489, 18190978]

約数ペア:

[(1, 18190978), (2, 9095489), (13, 1399306), (26, 699653), (43, 423046), (53, 343226), (86, 211523), (106, 171613), (307, 59254), (559, 32542), (614, 29627), (689, 26402), (1118, 16271), (1378, 13201), (2279, 7982), (3991, 4558)]