18811688

素因数分解:

$2^3\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1297}}^1$

素因数の和:1354

約数の個数: 48

約数和(自身を含む): 42172020

約数和(自身を除く): 23360332

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 49, 56, 74, 98, 148, 196, 259, 296, 392, 518, 1036, 1297, 1813, 2072, 2594, 3626, 5188, 7252, 9079, 10376, 14504, 18158, 36316, 47989, 63553, 72632, 95978, 127106, 191956, 254212, 335923, 383912, 508424, 671846, 1343692, 2351461, 2687384, 4702922, 9405844, 18811688]

約数ペア:

[(1, 18811688), (2, 9405844), (4, 4702922), (7, 2687384), (8, 2351461), (14, 1343692), (28, 671846), (37, 508424), (49, 383912), (56, 335923), (74, 254212), (98, 191956), (148, 127106), (196, 95978), (259, 72632), (296, 63553), (392, 47989), (518, 36316), (1036, 18158), (1297, 14504), (1813, 10376), (2072, 9079), (2594, 7252), (3626, 5188)]