20304008

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{139}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 41706000

約数和(自身を除く): 21401992

約数列:

[1, 2, 4, 8, 19, 31, 38, 62, 76, 124, 139, 152, 248, 278, 556, 589, 961, 1112, 1178, 1922, 2356, 2641, 3844, 4309, 4712, 5282, 7688, 8618, 10564, 17236, 18259, 21128, 34472, 36518, 73036, 81871, 133579, 146072, 163742, 267158, 327484, 534316, 654968, 1068632, 2538001, 5076002, 10152004, 20304008]

約数ペア:

[(1, 20304008), (2, 10152004), (4, 5076002), (8, 2538001), (19, 1068632), (31, 654968), (38, 534316), (62, 327484), (76, 267158), (124, 163742), (139, 146072), (152, 133579), (248, 81871), (278, 73036), (556, 36518), (589, 34472), (961, 21128), (1112, 18259), (1178, 17236), (1922, 10564), (2356, 8618), (2641, 7688), (3844, 5282), (4309, 4712)]