21801395

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3331}}^1$

素因数の和:3371

約数の個数: 32

約数和(自身を含む): 34546176

約数和(自身を除く): 12744781

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 385, 595, 935, 1309, 3331, 6545, 16655, 23317, 36641, 56627, 116585, 183205, 256487, 283135, 396389, 622897, 1282435, 1981945, 3114485, 4360279, 21801395]

約数ペア:

[(1, 21801395), (5, 4360279), (7, 3114485), (11, 1981945), (17, 1282435), (35, 622897), (55, 396389), (77, 283135), (85, 256487), (119, 183205), (187, 116585), (385, 56627), (595, 36641), (935, 23317), (1309, 16655), (3331, 6545)]