21143056

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:260

約数の個数: 60

約数和(自身を含む): 45979696

約数和(自身を除く): 24836640

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 67, 88, 121, 134, 163, 176, 242, 268, 326, 484, 536, 652, 737, 968, 1072, 1304, 1474, 1793, 1936, 2608, 2948, 3586, 5896, 7172, 8107, 10921, 11792, 14344, 16214, 19723, 21842, 28688, 32428, 39446, 43684, 64856, 78892, 87368, 120131, 129712, 157784, 174736, 240262, 315568, 480524, 961048, 1321441, 1922096, 2642882, 5285764, 10571528, 21143056]

約数ペア:

[(1, 21143056), (2, 10571528), (4, 5285764), (8, 2642882), (11, 1922096), (16, 1321441), (22, 961048), (44, 480524), (67, 315568), (88, 240262), (121, 174736), (134, 157784), (163, 129712), (176, 120131), (242, 87368), (268, 78892), (326, 64856), (484, 43684), (536, 39446), (652, 32428), (737, 28688), (968, 21842), (1072, 19723), (1304, 16214), (1474, 14344), (1793, 11792), (1936, 10921), (2608, 8107), (2948, 7172), (3586, 5896)]