20748091

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:211

約数の個数: 32

約数和(自身を含む): 26869248

約数和(自身を除く): 6121157

約数列:

[1, 7, 13, 41, 67, 83, 91, 287, 469, 533, 581, 871, 1079, 2747, 3403, 3731, 5561, 6097, 7553, 19229, 23821, 35711, 38927, 44239, 72293, 228001, 249977, 309673, 506051, 1596007, 2964013, 20748091]

約数ペア:

[(1, 20748091), (7, 2964013), (13, 1596007), (41, 506051), (67, 309673), (83, 249977), (91, 228001), (287, 72293), (469, 44239), (533, 38927), (581, 35711), (871, 23821), (1079, 19229), (2747, 7553), (3403, 6097), (3731, 5561)]