21203120

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{2477}}^1$

素因数の和:2597

約数の個数: 40

約数和(自身を含む): 49778064

約数和(自身を除く): 28574944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 2140, 2477, 4280, 4954, 8560, 9908, 12385, 19816, 24770, 39632, 49540, 99080, 198160, 265039, 530078, 1060156, 1325195, 2120312, 2650390, 4240624, 5300780, 10601560, 21203120]

約数ペア:

[(1, 21203120), (2, 10601560), (4, 5300780), (5, 4240624), (8, 2650390), (10, 2120312), (16, 1325195), (20, 1060156), (40, 530078), (80, 265039), (107, 198160), (214, 99080), (428, 49540), (535, 39632), (856, 24770), (1070, 19816), (1712, 12385), (2140, 9908), (2477, 8560), (4280, 4954)]