21145306

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{521}}^1$

素因数の和:766

約数の個数: 32

約数和(自身を含む): 39287808

約数和(自身を除く): 18142502

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 223, 446, 521, 1042, 1561, 2899, 3122, 3647, 5798, 6773, 7294, 13546, 20293, 40586, 47411, 94822, 116183, 232366, 813281, 1510379, 1626562, 3020758, 10572653, 21145306]

約数ペア:

[(1, 21145306), (2, 10572653), (7, 3020758), (13, 1626562), (14, 1510379), (26, 813281), (91, 232366), (182, 116183), (223, 94822), (446, 47411), (521, 40586), (1042, 20293), (1561, 13546), (2899, 7294), (3122, 6773), (3647, 5798)]