21040852

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 43552768

約数和(自身を除く): 22511916

約数列:

[1, 2, 4, 7, 14, 28, 61, 97, 122, 127, 194, 244, 254, 388, 427, 508, 679, 854, 889, 1358, 1708, 1778, 2716, 3556, 5917, 7747, 11834, 12319, 15494, 23668, 24638, 30988, 41419, 49276, 54229, 82838, 86233, 108458, 165676, 172466, 216916, 344932, 751459, 1502918, 3005836, 5260213, 10520426, 21040852]

約数ペア:

[(1, 21040852), (2, 10520426), (4, 5260213), (7, 3005836), (14, 1502918), (28, 751459), (61, 344932), (97, 216916), (122, 172466), (127, 165676), (194, 108458), (244, 86233), (254, 82838), (388, 54229), (427, 49276), (508, 41419), (679, 30988), (854, 24638), (889, 23668), (1358, 15494), (1708, 12319), (1778, 11834), (2716, 7747), (3556, 5917)]