21372495

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{397}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 35571648

約数和(自身を除く): 14199153

約数列:

[1, 3, 5, 15, 37, 97, 111, 185, 291, 397, 485, 555, 1191, 1455, 1985, 3589, 5955, 10767, 14689, 17945, 38509, 44067, 53835, 73445, 115527, 192545, 220335, 577635, 1424833, 4274499, 7124165, 21372495]

約数ペア:

[(1, 21372495), (3, 7124165), (5, 4274499), (15, 1424833), (37, 577635), (97, 220335), (111, 192545), (185, 115527), (291, 73445), (397, 53835), (485, 44067), (555, 38509), (1191, 17945), (1455, 14689), (1985, 10767), (3589, 5955)]