21207340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{293}}^1$

素因数の和:367

約数の個数: 96

約数和(自身を含む): 56899584

約数和(自身を除く): 35692244

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 47, 55, 70, 77, 94, 110, 140, 154, 188, 220, 235, 293, 308, 329, 385, 470, 517, 586, 658, 770, 940, 1034, 1172, 1316, 1465, 1540, 1645, 2051, 2068, 2585, 2930, 3223, 3290, 3619, 4102, 5170, 5860, 6446, 6580, 7238, 8204, 10255, 10340, 12892, 13771, 14476, 16115, 18095, 20510, 22561, 27542, 32230, 36190, 41020, 45122, 55084, 64460, 68855, 72380, 90244, 96397, 112805, 137710, 151481, 192794, 225610, 275420, 302962, 385588, 451220, 481985, 605924, 757405, 963970, 1060367, 1514810, 1927940, 2120734, 3029620, 4241468, 5301835, 10603670, 21207340]

約数ペア:

[(1, 21207340), (2, 10603670), (4, 5301835), (5, 4241468), (7, 3029620), (10, 2120734), (11, 1927940), (14, 1514810), (20, 1060367), (22, 963970), (28, 757405), (35, 605924), (44, 481985), (47, 451220), (55, 385588), (70, 302962), (77, 275420), (94, 225610), (110, 192794), (140, 151481), (154, 137710), (188, 112805), (220, 96397), (235, 90244), (293, 72380), (308, 68855), (329, 64460), (385, 55084), (470, 45122), (517, 41020), (586, 36190), (658, 32230), (770, 27542), (940, 22561), (1034, 20510), (1172, 18095), (1316, 16115), (1465, 14476), (1540, 13771), (1645, 12892), (2051, 10340), (2068, 10255), (2585, 8204), (2930, 7238), (3223, 6580), (3290, 6446), (3619, 5860), (4102, 5170)]