21490786

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{367}}^1$

素因数の和:478

約数の個数: 32

約数和(自身を含む): 36034560

約数和(自身を除く): 14543774

約数列:

[1, 2, 19, 23, 38, 46, 67, 134, 367, 437, 734, 874, 1273, 1541, 2546, 3082, 6973, 8441, 13946, 16882, 24589, 29279, 49178, 58558, 160379, 320758, 467191, 565547, 934382, 1131094, 10745393, 21490786]

約数ペア:

[(1, 21490786), (2, 10745393), (19, 1131094), (23, 934382), (38, 565547), (46, 467191), (67, 320758), (134, 160379), (367, 58558), (437, 49178), (734, 29279), (874, 24589), (1273, 16882), (1541, 13946), (2546, 8441), (3082, 6973)]