20247425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 29890944

約数和(自身を除く): 9643519

約数列:

[1, 5, 11, 17, 25, 55, 61, 71, 85, 187, 275, 305, 355, 425, 671, 781, 935, 1037, 1207, 1525, 1775, 3355, 3905, 4331, 4675, 5185, 6035, 11407, 13277, 16775, 19525, 21655, 25925, 30175, 47641, 57035, 66385, 73627, 108275, 238205, 285175, 331925, 368135, 809897, 1191025, 1840675, 4049485, 20247425]

約数ペア:

[(1, 20247425), (5, 4049485), (11, 1840675), (17, 1191025), (25, 809897), (55, 368135), (61, 331925), (71, 285175), (85, 238205), (187, 108275), (275, 73627), (305, 66385), (355, 57035), (425, 47641), (671, 30175), (781, 25925), (935, 21655), (1037, 19525), (1207, 16775), (1525, 13277), (1775, 11407), (3355, 6035), (3905, 5185), (4331, 4675)]