8955220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 19672128

約数和(自身を除く): 10716908

約数列:

[1, 2, 4, 5, 10, 20, 41, 67, 82, 134, 163, 164, 205, 268, 326, 335, 410, 652, 670, 815, 820, 1340, 1630, 2747, 3260, 5494, 6683, 10921, 10988, 13366, 13735, 21842, 26732, 27470, 33415, 43684, 54605, 54940, 66830, 109210, 133660, 218420, 447761, 895522, 1791044, 2238805, 4477610, 8955220]

約数ペア:

[(1, 8955220), (2, 4477610), (4, 2238805), (5, 1791044), (10, 895522), (20, 447761), (41, 218420), (67, 133660), (82, 109210), (134, 66830), (163, 54940), (164, 54605), (205, 43684), (268, 33415), (326, 27470), (335, 26732), (410, 21842), (652, 13735), (670, 13366), (815, 10988), (820, 10921), (1340, 6683), (1630, 5494), (2747, 3260)]