21470589

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1993}}^1$

素因数の和:2031

約数の個数: 40

約数和(自身を含む): 38603840

約数和(自身を除く): 17133251

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 399, 513, 567, 1197, 1539, 1993, 3591, 5979, 10773, 13951, 17937, 37867, 41853, 53811, 113601, 125559, 161433, 265069, 340803, 376677, 795207, 1022409, 1130031, 2385621, 3067227, 7156863, 21470589]

約数ペア:

[(1, 21470589), (3, 7156863), (7, 3067227), (9, 2385621), (19, 1130031), (21, 1022409), (27, 795207), (57, 376677), (63, 340803), (81, 265069), (133, 161433), (171, 125559), (189, 113601), (399, 53811), (513, 41853), (567, 37867), (1197, 17937), (1539, 13951), (1993, 10773), (3591, 5979)]