19697175

素因数分解:

$3^4\times 5^2\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:230

約数の個数: 60

約数和(自身を含む): 37269936

約数和(自身を除く): 17572761

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 71, 75, 81, 135, 137, 213, 225, 355, 405, 411, 639, 675, 685, 1065, 1233, 1775, 1917, 2025, 2055, 3195, 3425, 3699, 5325, 5751, 6165, 9585, 9727, 10275, 11097, 15975, 18495, 28755, 29181, 30825, 47925, 48635, 55485, 87543, 92475, 143775, 145905, 243175, 262629, 277425, 437715, 729525, 787887, 1313145, 2188575, 3939435, 6565725, 19697175]

約数ペア:

[(1, 19697175), (3, 6565725), (5, 3939435), (9, 2188575), (15, 1313145), (25, 787887), (27, 729525), (45, 437715), (71, 277425), (75, 262629), (81, 243175), (135, 145905), (137, 143775), (213, 92475), (225, 87543), (355, 55485), (405, 48635), (411, 47925), (639, 30825), (675, 29181), (685, 28755), (1065, 18495), (1233, 15975), (1775, 11097), (1917, 10275), (2025, 9727), (2055, 9585), (3195, 6165), (3425, 5751), (3699, 5325)]