20681766

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:250

約数の個数: 96

約数和(自身を含む): 55261440

約数和(自身を除く): 34579674

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 19, 21, 38, 42, 53, 57, 63, 106, 114, 126, 133, 159, 163, 171, 266, 318, 326, 342, 371, 399, 477, 489, 742, 798, 954, 978, 1007, 1113, 1141, 1197, 1467, 2014, 2226, 2282, 2394, 2934, 3021, 3097, 3339, 3423, 6042, 6194, 6678, 6846, 7049, 8639, 9063, 9291, 10269, 14098, 17278, 18126, 18582, 20538, 21147, 21679, 25917, 27873, 42294, 43358, 51834, 55746, 60473, 63441, 65037, 77751, 120946, 126882, 130074, 155502, 164141, 181419, 195111, 328282, 362838, 390222, 492423, 544257, 984846, 1088514, 1148987, 1477269, 2297974, 2954538, 3446961, 6893922, 10340883, 20681766]

約数ペア:

[(1, 20681766), (2, 10340883), (3, 6893922), (6, 3446961), (7, 2954538), (9, 2297974), (14, 1477269), (18, 1148987), (19, 1088514), (21, 984846), (38, 544257), (42, 492423), (53, 390222), (57, 362838), (63, 328282), (106, 195111), (114, 181419), (126, 164141), (133, 155502), (159, 130074), (163, 126882), (171, 120946), (266, 77751), (318, 65037), (326, 63441), (342, 60473), (371, 55746), (399, 51834), (477, 43358), (489, 42294), (742, 27873), (798, 25917), (954, 21679), (978, 21147), (1007, 20538), (1113, 18582), (1141, 18126), (1197, 17278), (1467, 14098), (2014, 10269), (2226, 9291), (2282, 9063), (2394, 8639), (2934, 7049), (3021, 6846), (3097, 6678), (3339, 6194), (3423, 6042)]