21779992

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:260

約数の個数: 64

約数和(自身を含む): 47416320

約数和(自身を除く): 25636328

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 97, 104, 127, 136, 194, 221, 254, 388, 442, 508, 776, 884, 1016, 1261, 1649, 1651, 1768, 2159, 2522, 3298, 3302, 4318, 5044, 6596, 6604, 8636, 10088, 12319, 13192, 13208, 17272, 21437, 24638, 28067, 42874, 49276, 56134, 85748, 98552, 112268, 160147, 171496, 209423, 224536, 320294, 418846, 640588, 837692, 1281176, 1675384, 2722499, 5444998, 10889996, 21779992]

約数ペア:

[(1, 21779992), (2, 10889996), (4, 5444998), (8, 2722499), (13, 1675384), (17, 1281176), (26, 837692), (34, 640588), (52, 418846), (68, 320294), (97, 224536), (104, 209423), (127, 171496), (136, 160147), (194, 112268), (221, 98552), (254, 85748), (388, 56134), (442, 49276), (508, 42874), (776, 28067), (884, 24638), (1016, 21437), (1261, 17272), (1649, 13208), (1651, 13192), (1768, 12319), (2159, 10088), (2522, 8636), (3298, 6604), (3302, 6596), (4318, 5044)]