689440

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:185

約数の個数: 48

約数和(自身を含む): 1693440

約数和(自身を除く): 1004000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 139, 155, 160, 248, 278, 310, 496, 556, 620, 695, 992, 1112, 1240, 1390, 2224, 2480, 2780, 4309, 4448, 4960, 5560, 8618, 11120, 17236, 21545, 22240, 34472, 43090, 68944, 86180, 137888, 172360, 344720, 689440]

約数ペア:

[(1, 689440), (2, 344720), (4, 172360), (5, 137888), (8, 86180), (10, 68944), (16, 43090), (20, 34472), (31, 22240), (32, 21545), (40, 17236), (62, 11120), (80, 8618), (124, 5560), (139, 4960), (155, 4448), (160, 4309), (248, 2780), (278, 2480), (310, 2224), (496, 1390), (556, 1240), (620, 1112), (695, 992)]