2778380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{173}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 6489504

約数和(自身を除く): 3711124

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 173, 220, 292, 346, 365, 692, 730, 803, 865, 1460, 1606, 1730, 1903, 3212, 3460, 3806, 4015, 7612, 8030, 9515, 12629, 16060, 19030, 25258, 38060, 50516, 63145, 126290, 138919, 252580, 277838, 555676, 694595, 1389190, 2778380]

約数ペア:

[(1, 2778380), (2, 1389190), (4, 694595), (5, 555676), (10, 277838), (11, 252580), (20, 138919), (22, 126290), (44, 63145), (55, 50516), (73, 38060), (110, 25258), (146, 19030), (173, 16060), (220, 12629), (292, 9515), (346, 8030), (365, 7612), (692, 4015), (730, 3806), (803, 3460), (865, 3212), (1460, 1903), (1606, 1730)]