19310985

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{127}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 35143680

約数和(自身を除く): 15832695

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 109, 127, 155, 279, 327, 381, 465, 545, 635, 981, 1143, 1395, 1635, 1905, 3379, 3937, 4905, 5715, 10137, 11811, 13843, 16895, 19685, 30411, 35433, 41529, 50685, 59055, 69215, 124587, 152055, 177165, 207645, 429133, 622935, 1287399, 2145665, 3862197, 6436995, 19310985]

約数ペア:

[(1, 19310985), (3, 6436995), (5, 3862197), (9, 2145665), (15, 1287399), (31, 622935), (45, 429133), (93, 207645), (109, 177165), (127, 152055), (155, 124587), (279, 69215), (327, 59055), (381, 50685), (465, 41529), (545, 35433), (635, 30411), (981, 19685), (1143, 16895), (1395, 13843), (1635, 11811), (1905, 10137), (3379, 5715), (3937, 4905)]