19816938

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{151}}^1\times {\mathrm{317}}^1$

素因数の和:499

約数の個数: 48

約数和(自身を含む): 45242496

約数和(自身を除く): 25425558

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 69, 138, 151, 207, 302, 317, 414, 453, 634, 906, 951, 1359, 1902, 2718, 2853, 3473, 5706, 6946, 7291, 10419, 14582, 20838, 21873, 31257, 43746, 47867, 62514, 65619, 95734, 131238, 143601, 287202, 430803, 861606, 1100941, 2201882, 3302823, 6605646, 9908469, 19816938]

約数ペア:

[(1, 19816938), (2, 9908469), (3, 6605646), (6, 3302823), (9, 2201882), (18, 1100941), (23, 861606), (46, 430803), (69, 287202), (138, 143601), (151, 131238), (207, 95734), (302, 65619), (317, 62514), (414, 47867), (453, 43746), (634, 31257), (906, 21873), (951, 20838), (1359, 14582), (1902, 10419), (2718, 7291), (2853, 6946), (3473, 5706)]