28274840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{359}}^1$

素因数の和:560

約数の個数: 64

約数和(自身を含む): 69984000

約数和(自身を除く): 41709160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 179, 220, 358, 359, 440, 716, 718, 895, 1432, 1436, 1790, 1795, 1969, 2872, 3580, 3590, 3938, 3949, 7160, 7180, 7876, 7898, 9845, 14360, 15752, 15796, 19690, 19745, 31592, 39380, 39490, 64261, 78760, 78980, 128522, 157960, 257044, 321305, 514088, 642610, 706871, 1285220, 1413742, 2570440, 2827484, 3534355, 5654968, 7068710, 14137420, 28274840]

約数ペア:

[(1, 28274840), (2, 14137420), (4, 7068710), (5, 5654968), (8, 3534355), (10, 2827484), (11, 2570440), (20, 1413742), (22, 1285220), (40, 706871), (44, 642610), (55, 514088), (88, 321305), (110, 257044), (179, 157960), (220, 128522), (358, 78980), (359, 78760), (440, 64261), (716, 39490), (718, 39380), (895, 31592), (1432, 19745), (1436, 19690), (1790, 15796), (1795, 15752), (1969, 14360), (2872, 9845), (3580, 7898), (3590, 7876), (3938, 7180), (3949, 7160)]