21252700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{313}}^1$

素因数の和:431

約数の個数: 72

約数和(自身を含む): 53420192

約数和(自身を除く): 32167492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 97, 100, 140, 175, 194, 313, 350, 388, 485, 626, 679, 700, 970, 1252, 1358, 1565, 1940, 2191, 2425, 2716, 3130, 3395, 4382, 4850, 6260, 6790, 7825, 8764, 9700, 10955, 13580, 15650, 16975, 21910, 30361, 31300, 33950, 43820, 54775, 60722, 67900, 109550, 121444, 151805, 212527, 219100, 303610, 425054, 607220, 759025, 850108, 1062635, 1518050, 2125270, 3036100, 4250540, 5313175, 10626350, 21252700]

約数ペア:

[(1, 21252700), (2, 10626350), (4, 5313175), (5, 4250540), (7, 3036100), (10, 2125270), (14, 1518050), (20, 1062635), (25, 850108), (28, 759025), (35, 607220), (50, 425054), (70, 303610), (97, 219100), (100, 212527), (140, 151805), (175, 121444), (194, 109550), (313, 67900), (350, 60722), (388, 54775), (485, 43820), (626, 33950), (679, 31300), (700, 30361), (970, 21910), (1252, 16975), (1358, 15650), (1565, 13580), (1940, 10955), (2191, 9700), (2425, 8764), (2716, 7825), (3130, 6790), (3395, 6260), (4382, 4850)]