21271497

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{251}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 32006016

約数和(自身を除く): 10734519

約数列:

[1, 3, 13, 39, 41, 53, 123, 159, 251, 533, 689, 753, 1599, 2067, 2173, 3263, 6519, 9789, 10291, 13303, 28249, 30873, 39909, 84747, 133783, 172939, 401349, 518817, 545423, 1636269, 7090499, 21271497]

約数ペア:

[(1, 21271497), (3, 7090499), (13, 1636269), (39, 545423), (41, 518817), (53, 401349), (123, 172939), (159, 133783), (251, 84747), (533, 39909), (689, 30873), (753, 28249), (1599, 13303), (2067, 10291), (2173, 9789), (3263, 6519)]