21144992

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:202

約数の個数: 72

約数和(自身を含む): 47190528

約数和(自身を除く): 26045536

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 43, 44, 86, 88, 121, 127, 172, 176, 242, 254, 344, 352, 473, 484, 508, 688, 946, 968, 1016, 1376, 1397, 1892, 1936, 2032, 2794, 3784, 3872, 4064, 5203, 5461, 5588, 7568, 10406, 10922, 11176, 15136, 15367, 20812, 21844, 22352, 30734, 41624, 43688, 44704, 60071, 61468, 83248, 87376, 120142, 122936, 166496, 174752, 240284, 245872, 480568, 491744, 660781, 961136, 1321562, 1922272, 2643124, 5286248, 10572496, 21144992]

約数ペア:

[(1, 21144992), (2, 10572496), (4, 5286248), (8, 2643124), (11, 1922272), (16, 1321562), (22, 961136), (32, 660781), (43, 491744), (44, 480568), (86, 245872), (88, 240284), (121, 174752), (127, 166496), (172, 122936), (176, 120142), (242, 87376), (254, 83248), (344, 61468), (352, 60071), (473, 44704), (484, 43688), (508, 41624), (688, 30734), (946, 22352), (968, 21844), (1016, 20812), (1376, 15367), (1397, 15136), (1892, 11176), (1936, 10922), (2032, 10406), (2794, 7568), (3784, 5588), (3872, 5461), (4064, 5203)]