21517380

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{39847}}^1$

素因数の和:39865

約数の個数: 48

約数和(自身を含む): 66944640

約数和(自身を除く): 45427260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 39847, 79694, 119541, 159388, 199235, 239082, 358623, 398470, 478164, 597705, 717246, 796940, 1075869, 1195410, 1434492, 1793115, 2151738, 2390820, 3586230, 4303476, 5379345, 7172460, 10758690, 21517380]

約数ペア:

[(1, 21517380), (2, 10758690), (3, 7172460), (4, 5379345), (5, 4303476), (6, 3586230), (9, 2390820), (10, 2151738), (12, 1793115), (15, 1434492), (18, 1195410), (20, 1075869), (27, 796940), (30, 717246), (36, 597705), (45, 478164), (54, 398470), (60, 358623), (90, 239082), (108, 199235), (135, 159388), (180, 119541), (270, 79694), (540, 39847)]