18821686

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{439}}^1$

素因数の和:568

約数の個数: 32

約数和(自身を含む): 32598720

約数和(自身を除く): 13777034

約数列:

[1, 2, 13, 17, 26, 34, 97, 194, 221, 439, 442, 878, 1261, 1649, 2522, 3298, 5707, 7463, 11414, 14926, 21437, 42583, 42874, 85166, 97019, 194038, 553579, 723911, 1107158, 1447822, 9410843, 18821686]

約数ペア:

[(1, 18821686), (2, 9410843), (13, 1447822), (17, 1107158), (26, 723911), (34, 553579), (97, 194038), (194, 97019), (221, 85166), (439, 42874), (442, 42583), (878, 21437), (1261, 14926), (1649, 11414), (2522, 7463), (3298, 5707)]