18980962

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{499}}^1$

素因数の和:551

約数の個数: 64

約数和(自身を含む): 40320000

約数和(自身を除く): 21339038

約数列:

[1, 2, 7, 11, 13, 14, 19, 22, 26, 38, 77, 91, 133, 143, 154, 182, 209, 247, 266, 286, 418, 494, 499, 998, 1001, 1463, 1729, 2002, 2717, 2926, 3458, 3493, 5434, 5489, 6487, 6986, 9481, 10978, 12974, 18962, 19019, 38038, 38423, 45409, 66367, 71357, 76846, 90818, 104291, 123253, 132734, 142714, 208582, 246506, 499499, 730037, 862771, 998998, 1355783, 1460074, 1725542, 2711566, 9490481, 18980962]

約数ペア:

[(1, 18980962), (2, 9490481), (7, 2711566), (11, 1725542), (13, 1460074), (14, 1355783), (19, 998998), (22, 862771), (26, 730037), (38, 499499), (77, 246506), (91, 208582), (133, 142714), (143, 132734), (154, 123253), (182, 104291), (209, 90818), (247, 76846), (266, 71357), (286, 66367), (418, 45409), (494, 38423), (499, 38038), (998, 19019), (1001, 18962), (1463, 12974), (1729, 10978), (2002, 9481), (2717, 6986), (2926, 6487), (3458, 5489), (3493, 5434)]