81459460

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{4561}}^1$

素因数の和:4636

約数の個数: 48

約数和(自身を含む): 183939840

約数和(自身を除く): 102480380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 76, 94, 95, 188, 190, 235, 380, 470, 893, 940, 1786, 3572, 4465, 4561, 8930, 9122, 17860, 18244, 22805, 45610, 86659, 91220, 173318, 214367, 346636, 428734, 433295, 857468, 866590, 1071835, 1733180, 2143670, 4072973, 4287340, 8145946, 16291892, 20364865, 40729730, 81459460]

約数ペア:

[(1, 81459460), (2, 40729730), (4, 20364865), (5, 16291892), (10, 8145946), (19, 4287340), (20, 4072973), (38, 2143670), (47, 1733180), (76, 1071835), (94, 866590), (95, 857468), (188, 433295), (190, 428734), (235, 346636), (380, 214367), (470, 173318), (893, 91220), (940, 86659), (1786, 45610), (3572, 22805), (4465, 18244), (4561, 17860), (8930, 9122)]