39981795

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:457

約数の個数: 64

約数和(自身を含む): 78720000

約数和(自身を除く): 38738205

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 133, 147, 245, 285, 343, 399, 409, 665, 735, 931, 1029, 1227, 1715, 1995, 2045, 2793, 2863, 4655, 5145, 6135, 6517, 7771, 8589, 13965, 14315, 19551, 20041, 23313, 32585, 38855, 42945, 54397, 60123, 97755, 100205, 116565, 140287, 163191, 271985, 300615, 380779, 420861, 701435, 815955, 1142337, 1903895, 2104305, 2665453, 5711685, 7996359, 13327265, 39981795]

約数ペア:

[(1, 39981795), (3, 13327265), (5, 7996359), (7, 5711685), (15, 2665453), (19, 2104305), (21, 1903895), (35, 1142337), (49, 815955), (57, 701435), (95, 420861), (105, 380779), (133, 300615), (147, 271985), (245, 163191), (285, 140287), (343, 116565), (399, 100205), (409, 97755), (665, 60123), (735, 54397), (931, 42945), (1029, 38855), (1227, 32585), (1715, 23313), (1995, 20041), (2045, 19551), (2793, 14315), (2863, 13965), (4655, 8589), (5145, 7771), (6135, 6517)]