19880892

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:315

約数の個数: 72

約数和(自身を含む): 52743600

約数和(自身を除く): 32862708

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 87, 116, 137, 139, 174, 261, 274, 278, 348, 411, 417, 522, 548, 556, 822, 834, 1044, 1233, 1251, 1644, 1668, 2466, 2502, 3973, 4031, 4932, 5004, 7946, 8062, 11919, 12093, 15892, 16124, 19043, 23838, 24186, 35757, 36279, 38086, 47676, 48372, 57129, 71514, 72558, 76172, 114258, 143028, 145116, 171387, 228516, 342774, 552247, 685548, 1104494, 1656741, 2208988, 3313482, 4970223, 6626964, 9940446, 19880892]

約数ペア:

[(1, 19880892), (2, 9940446), (3, 6626964), (4, 4970223), (6, 3313482), (9, 2208988), (12, 1656741), (18, 1104494), (29, 685548), (36, 552247), (58, 342774), (87, 228516), (116, 171387), (137, 145116), (139, 143028), (174, 114258), (261, 76172), (274, 72558), (278, 71514), (348, 57129), (411, 48372), (417, 47676), (522, 38086), (548, 36279), (556, 35757), (822, 24186), (834, 23838), (1044, 19043), (1233, 16124), (1251, 15892), (1644, 12093), (1668, 11919), (2466, 8062), (2502, 7946), (3973, 5004), (4031, 4932)]