21000423

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{359}}^1$

素因数の和:447

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 10518297

約数列:

[1, 3, 17, 31, 37, 51, 93, 111, 359, 527, 629, 1077, 1147, 1581, 1887, 3441, 6103, 11129, 13283, 18309, 19499, 33387, 39849, 58497, 189193, 225811, 411773, 567579, 677433, 1235319, 7000141, 21000423]

約数ペア:

[(1, 21000423), (3, 7000141), (17, 1235319), (31, 677433), (37, 567579), (51, 411773), (93, 225811), (111, 189193), (359, 58497), (527, 39849), (629, 33387), (1077, 19499), (1147, 18309), (1581, 13283), (1887, 11129), (3441, 6103)]