278345193

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{6907}}^1$

素因数の和:7037

約数の個数: 32

約数和(自身を含む): 450954240

約数和(自身を除く): 172609047

約数列:

[1, 3, 7, 19, 21, 57, 101, 133, 303, 399, 707, 1919, 2121, 5757, 6907, 13433, 20721, 40299, 48349, 131233, 145047, 393699, 697607, 918631, 2092821, 2755893, 4883249, 13254533, 14649747, 39763599, 92781731, 278345193]

約数ペア:

[(1, 278345193), (3, 92781731), (7, 39763599), (19, 14649747), (21, 13254533), (57, 4883249), (101, 2755893), (133, 2092821), (303, 918631), (399, 697607), (707, 393699), (1919, 145047), (2121, 131233), (5757, 48349), (6907, 40299), (13433, 20721)]