21976965

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10391}}^1$

素因数の和:10449

約数の個数: 24

約数和(自身を含む): 38907648

約数和(自身を除く): 16930683

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 10391, 31173, 51955, 93519, 155865, 467595, 488377, 1465131, 2441885, 4395393, 7325655, 21976965]

約数ペア:

[(1, 21976965), (3, 7325655), (5, 4395393), (9, 2441885), (15, 1465131), (45, 488377), (47, 467595), (141, 155865), (235, 93519), (423, 51955), (705, 31173), (2115, 10391)]