13990821

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 21504000

約数和(自身を除く): 7513179

約数列:

[1, 3, 13, 19, 39, 57, 79, 237, 239, 247, 717, 741, 1027, 1501, 3081, 3107, 4503, 4541, 9321, 13623, 18881, 19513, 56643, 58539, 59033, 177099, 245453, 358739, 736359, 1076217, 4663607, 13990821]

約数ペア:

[(1, 13990821), (3, 4663607), (13, 1076217), (19, 736359), (39, 358739), (57, 245453), (79, 177099), (237, 59033), (239, 58539), (247, 56643), (717, 19513), (741, 18881), (1027, 13623), (1501, 9321), (3081, 4541), (3107, 4503)]