777777290

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{293}}^1\times {\mathrm{8563}}^1$

素因数の和:8894

約数の個数: 32

約数和(自身を含む): 1450262016

約数和(自身を除く): 672484726

約数列:

[1, 2, 5, 10, 31, 62, 155, 293, 310, 586, 1465, 2930, 8563, 9083, 17126, 18166, 42815, 45415, 85630, 90830, 265453, 530906, 1327265, 2508959, 2654530, 5017918, 12544795, 25089590, 77777729, 155555458, 388888645, 777777290]

約数ペア:

[(1, 777777290), (2, 388888645), (5, 155555458), (10, 77777729), (31, 25089590), (62, 12544795), (155, 5017918), (293, 2654530), (310, 2508959), (586, 1327265), (1465, 530906), (2930, 265453), (8563, 90830), (9083, 85630), (17126, 45415), (18166, 42815)]