20381569124

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{61}}^2\times {\mathrm{3691}}^1$

素因数の和:3877

約数の個数: 72

約数和(自身を含む): 42235712064

約数和(自身を除く): 21854142940

約数列:

[1, 2, 4, 7, 14, 28, 53, 61, 106, 122, 212, 244, 371, 427, 742, 854, 1484, 1708, 3233, 3691, 3721, 6466, 7382, 7442, 12932, 14764, 14884, 22631, 25837, 26047, 45262, 51674, 52094, 90524, 103348, 104188, 195623, 197213, 225151, 391246, 394426, 450302, 782492, 788852, 900604, 1369361, 1380491, 1576057, 2738722, 2760982, 3152114, 5477444, 5521964, 6304228, 11933003, 13734211, 23866006, 27468422, 47732012, 54936844, 83531021, 96139477, 167062042, 192278954, 334124084, 384557908, 727913183, 1455826366, 2911652732, 5095392281, 10190784562, 20381569124]

約数ペア:

[(1, 20381569124), (2, 10190784562), (4, 5095392281), (7, 2911652732), (14, 1455826366), (28, 727913183), (53, 384557908), (61, 334124084), (106, 192278954), (122, 167062042), (212, 96139477), (244, 83531021), (371, 54936844), (427, 47732012), (742, 27468422), (854, 23866006), (1484, 13734211), (1708, 11933003), (3233, 6304228), (3691, 5521964), (3721, 5477444), (6466, 3152114), (7382, 2760982), (7442, 2738722), (12932, 1576057), (14764, 1380491), (14884, 1369361), (22631, 900604), (25837, 788852), (26047, 782492), (45262, 450302), (51674, 394426), (52094, 391246), (90524, 225151), (103348, 197213), (104188, 195623)]