21947940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17419}}^1$

素因数の和:17441

約数の個数: 72

約数和(自身を含む): 76090560

約数和(自身を除く): 54142620

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 17419, 34838, 52257, 69676, 87095, 104514, 121933, 156771, 174190, 209028, 243866, 261285, 313542, 348380, 365799, 487732, 522570, 609665, 627084, 731598, 783855, 1045140, 1097397, 1219330, 1463196, 1567710, 1828995, 2194794, 2438660, 3135420, 3657990, 4389588, 5486985, 7315980, 10973970, 21947940]

約数ペア:

[(1, 21947940), (2, 10973970), (3, 7315980), (4, 5486985), (5, 4389588), (6, 3657990), (7, 3135420), (9, 2438660), (10, 2194794), (12, 1828995), (14, 1567710), (15, 1463196), (18, 1219330), (20, 1097397), (21, 1045140), (28, 783855), (30, 731598), (35, 627084), (36, 609665), (42, 522570), (45, 487732), (60, 365799), (63, 348380), (70, 313542), (84, 261285), (90, 243866), (105, 209028), (126, 174190), (140, 156771), (180, 121933), (210, 104514), (252, 87095), (315, 69676), (420, 52257), (630, 34838), (1260, 17419)]