19687496

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{401}}^1$

素因数の和:462

約数の個数: 48

約数和(自身を含む): 41353740

約数和(自身を除く): 21666244

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 361, 401, 646, 722, 802, 1292, 1444, 1604, 2584, 2888, 3208, 6137, 6817, 7619, 12274, 13634, 15238, 24548, 27268, 30476, 49096, 54536, 60952, 129523, 144761, 259046, 289522, 518092, 579044, 1036184, 1158088, 2460937, 4921874, 9843748, 19687496]

約数ペア:

[(1, 19687496), (2, 9843748), (4, 4921874), (8, 2460937), (17, 1158088), (19, 1036184), (34, 579044), (38, 518092), (68, 289522), (76, 259046), (136, 144761), (152, 129523), (323, 60952), (361, 54536), (401, 49096), (646, 30476), (722, 27268), (802, 24548), (1292, 15238), (1444, 13634), (1604, 12274), (2584, 7619), (2888, 6817), (3208, 6137)]