21373365

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2549}}^1$

素因数の和:2613

約数の個数: 32

約数和(自身を含む): 37699200

約数和(自身を除く): 16325835

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 195, 215, 559, 645, 1677, 2549, 2795, 7647, 8385, 12745, 33137, 38235, 99411, 109607, 165685, 328821, 497055, 548035, 1424891, 1644105, 4274673, 7124455, 21373365]

約数ペア:

[(1, 21373365), (3, 7124455), (5, 4274673), (13, 1644105), (15, 1424891), (39, 548035), (43, 497055), (65, 328821), (129, 165685), (195, 109607), (215, 99411), (559, 38235), (645, 33137), (1677, 12745), (2549, 8385), (2795, 7647)]