21915645

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{587}}^1$

素因数の和:745

約数の個数: 32

約数和(自身を含む): 37255680

約数和(自身を除く): 15340035

約数列:

[1, 3, 5, 15, 19, 57, 95, 131, 285, 393, 587, 655, 1761, 1965, 2489, 2935, 7467, 8805, 11153, 12445, 33459, 37335, 55765, 76897, 167295, 230691, 384485, 1153455, 1461043, 4383129, 7305215, 21915645]

約数ペア:

[(1, 21915645), (3, 7305215), (5, 4383129), (15, 1461043), (19, 1153455), (57, 384485), (95, 230691), (131, 167295), (285, 76897), (393, 55765), (587, 37335), (655, 33459), (1761, 12445), (1965, 11153), (2489, 8805), (2935, 7467)]