21246515

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{5813}}^1$

素因数の和:5878

約数の個数: 16

約数和(自身を含む): 27628128

約数和(自身を除く): 6381613

約数列:

[1, 5, 17, 43, 85, 215, 731, 3655, 5813, 29065, 98821, 249959, 494105, 1249795, 4249303, 21246515]

約数ペア:

[(1, 21246515), (5, 4249303), (17, 1249795), (43, 494105), (85, 249959), (215, 98821), (731, 29065), (3655, 5813)]