261456

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1$

素因数の和:443

約数の個数: 40

約数和(自身を含む): 729120

約数和(自身を除く): 467664

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 419, 624, 838, 1257, 1676, 2514, 3352, 5028, 5447, 6704, 10056, 10894, 16341, 20112, 21788, 32682, 43576, 65364, 87152, 130728, 261456]

約数ペア:

[(1, 261456), (2, 130728), (3, 87152), (4, 65364), (6, 43576), (8, 32682), (12, 21788), (13, 20112), (16, 16341), (24, 10894), (26, 10056), (39, 6704), (48, 5447), (52, 5028), (78, 3352), (104, 2514), (156, 1676), (208, 1257), (312, 838), (419, 624)]