21133805

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3229}}^1$

素因数の和:3269

約数の個数: 32

約数和(自身を含む): 33488640

約数和(自身を除く): 12354835

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 385, 595, 935, 1309, 3229, 6545, 16145, 22603, 35519, 54893, 113015, 177595, 248633, 274465, 384251, 603823, 1243165, 1921255, 3019115, 4226761, 21133805]

約数ペア:

[(1, 21133805), (5, 4226761), (7, 3019115), (11, 1921255), (17, 1243165), (35, 603823), (55, 384251), (77, 274465), (85, 248633), (119, 177595), (187, 113015), (385, 54893), (595, 35519), (935, 22603), (1309, 16145), (3229, 6545)]