21693854

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{173}}^1$

素因数の和:261

約数の個数: 48

約数和(自身を含む): 41267232

約数和(自身を除く): 19573378

約数列:

[1, 2, 7, 13, 14, 26, 53, 91, 106, 169, 173, 182, 338, 346, 371, 689, 742, 1183, 1211, 1378, 2249, 2366, 2422, 4498, 4823, 8957, 9169, 9646, 15743, 17914, 18338, 29237, 31486, 58474, 62699, 64183, 119197, 125398, 128366, 204659, 238394, 409318, 834379, 1549561, 1668758, 3099122, 10846927, 21693854]

約数ペア:

[(1, 21693854), (2, 10846927), (7, 3099122), (13, 1668758), (14, 1549561), (26, 834379), (53, 409318), (91, 238394), (106, 204659), (169, 128366), (173, 125398), (182, 119197), (338, 64183), (346, 62699), (371, 58474), (689, 31486), (742, 29237), (1183, 18338), (1211, 17914), (1378, 15743), (2249, 9646), (2366, 9169), (2422, 8957), (4498, 4823)]