21994785

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{269}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 40435200

約数和(自身を除く): 18440415

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 79, 115, 207, 237, 269, 345, 395, 711, 807, 1035, 1185, 1345, 1817, 2421, 3555, 4035, 5451, 6187, 9085, 12105, 16353, 18561, 21251, 27255, 30935, 55683, 63753, 81765, 92805, 106255, 191259, 278415, 318765, 488773, 956295, 1466319, 2443865, 4398957, 7331595, 21994785]

約数ペア:

[(1, 21994785), (3, 7331595), (5, 4398957), (9, 2443865), (15, 1466319), (23, 956295), (45, 488773), (69, 318765), (79, 278415), (115, 191259), (207, 106255), (237, 92805), (269, 81765), (345, 63753), (395, 55683), (711, 30935), (807, 27255), (1035, 21251), (1185, 18561), (1345, 16353), (1817, 12105), (2421, 9085), (3555, 6187), (4035, 5451)]