19720890

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1361}}^1$

素因数の和:1404

約数の個数: 96

約数和(自身を含む): 61191936

約数和(自身を除く): 41471046

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 23, 30, 35, 42, 45, 46, 63, 69, 70, 90, 105, 115, 126, 138, 161, 207, 210, 230, 315, 322, 345, 414, 483, 630, 690, 805, 966, 1035, 1361, 1449, 1610, 2070, 2415, 2722, 2898, 4083, 4830, 6805, 7245, 8166, 9527, 12249, 13610, 14490, 19054, 20415, 24498, 28581, 31303, 40830, 47635, 57162, 61245, 62606, 85743, 93909, 95270, 122490, 142905, 156515, 171486, 187818, 219121, 281727, 285810, 313030, 428715, 438242, 469545, 563454, 657363, 857430, 939090, 1095605, 1314726, 1408635, 1972089, 2191210, 2817270, 3286815, 3944178, 6573630, 9860445, 19720890]

約数ペア:

[(1, 19720890), (2, 9860445), (3, 6573630), (5, 3944178), (6, 3286815), (7, 2817270), (9, 2191210), (10, 1972089), (14, 1408635), (15, 1314726), (18, 1095605), (21, 939090), (23, 857430), (30, 657363), (35, 563454), (42, 469545), (45, 438242), (46, 428715), (63, 313030), (69, 285810), (70, 281727), (90, 219121), (105, 187818), (115, 171486), (126, 156515), (138, 142905), (161, 122490), (207, 95270), (210, 93909), (230, 85743), (315, 62606), (322, 61245), (345, 57162), (414, 47635), (483, 40830), (630, 31303), (690, 28581), (805, 24498), (966, 20415), (1035, 19054), (1361, 14490), (1449, 13610), (1610, 12249), (2070, 9527), (2415, 8166), (2722, 7245), (2898, 6805), (4083, 4830)]