21105700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2741}}^1$

素因数の和:2773

約数の個数: 72

約数和(自身を含む): 57121344

約数和(自身を除く): 36015644

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 50, 55, 70, 77, 100, 110, 140, 154, 175, 220, 275, 308, 350, 385, 550, 700, 770, 1100, 1540, 1925, 2741, 3850, 5482, 7700, 10964, 13705, 19187, 27410, 30151, 38374, 54820, 60302, 68525, 76748, 95935, 120604, 137050, 150755, 191870, 211057, 274100, 301510, 383740, 422114, 479675, 603020, 753775, 844228, 959350, 1055285, 1507550, 1918700, 2110570, 3015100, 4221140, 5276425, 10552850, 21105700]

約数ペア:

[(1, 21105700), (2, 10552850), (4, 5276425), (5, 4221140), (7, 3015100), (10, 2110570), (11, 1918700), (14, 1507550), (20, 1055285), (22, 959350), (25, 844228), (28, 753775), (35, 603020), (44, 479675), (50, 422114), (55, 383740), (70, 301510), (77, 274100), (100, 211057), (110, 191870), (140, 150755), (154, 137050), (175, 120604), (220, 95935), (275, 76748), (308, 68525), (350, 60302), (385, 54820), (550, 38374), (700, 30151), (770, 27410), (1100, 19187), (1540, 13705), (1925, 10964), (2741, 7700), (3850, 5482)]