18708996836

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{251}}^1\times {\mathrm{1259}}^1$

素因数の和:1593

約数の個数: 72

約数和(自身を含む): 35566685280

約数和(自身を除く): 16857688444

約数列:

[1, 2, 4, 19, 38, 41, 76, 82, 164, 251, 361, 502, 722, 779, 1004, 1259, 1444, 1558, 2518, 3116, 4769, 5036, 9538, 10291, 14801, 19076, 20582, 23921, 29602, 41164, 47842, 51619, 59204, 90611, 95684, 103238, 181222, 195529, 206476, 316009, 362444, 391058, 454499, 632018, 782116, 908998, 980761, 1264036, 1817996, 1961522, 3715051, 3923044, 6004171, 7430102, 12008342, 12956369, 14860204, 18634459, 24016684, 25912738, 37268918, 51825476, 74537836, 114079249, 228158498, 246171011, 456316996, 492342022, 984684044, 4677249209, 9354498418, 18708996836]

約数ペア:

[(1, 18708996836), (2, 9354498418), (4, 4677249209), (19, 984684044), (38, 492342022), (41, 456316996), (76, 246171011), (82, 228158498), (164, 114079249), (251, 74537836), (361, 51825476), (502, 37268918), (722, 25912738), (779, 24016684), (1004, 18634459), (1259, 14860204), (1444, 12956369), (1558, 12008342), (2518, 7430102), (3116, 6004171), (4769, 3923044), (5036, 3715051), (9538, 1961522), (10291, 1817996), (14801, 1264036), (19076, 980761), (20582, 908998), (23921, 782116), (29602, 632018), (41164, 454499), (47842, 391058), (51619, 362444), (59204, 316009), (90611, 206476), (95684, 195529), (103238, 181222)]