21515643

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{1151}}^1$

素因数の和:1255

約数の個数: 24

約数和(自身を含む): 32587776

約数和(自身を除く): 11072133

約数列:

[1, 3, 9, 31, 67, 93, 201, 279, 603, 1151, 2077, 3453, 6231, 10359, 18693, 35681, 77117, 107043, 231351, 321129, 694053, 2390627, 7171881, 21515643]

約数ペア:

[(1, 21515643), (3, 7171881), (9, 2390627), (31, 694053), (67, 321129), (93, 231351), (201, 107043), (279, 77117), (603, 35681), (1151, 18693), (2077, 10359), (3453, 6231)]