21998223

素因数分解:

$3^4\times {\mathrm{13}}^2\times {\mathrm{1607}}^1$

素因数の和:1645

約数の個数: 30

約数和(自身を含む): 35605944

約数和(自身を除く): 13607721

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 169, 351, 507, 1053, 1521, 1607, 4563, 4821, 13689, 14463, 20891, 43389, 62673, 130167, 188019, 271583, 564057, 814749, 1692171, 2444247, 7332741, 21998223]

約数ペア:

[(1, 21998223), (3, 7332741), (9, 2444247), (13, 1692171), (27, 814749), (39, 564057), (81, 271583), (117, 188019), (169, 130167), (351, 62673), (507, 43389), (1053, 20891), (1521, 14463), (1607, 13689), (4563, 4821)]