128721408

素因数分解:

$2^9\times 3^1\times {\mathrm{181}}^1\times {\mathrm{463}}^1$

素因数の和:665

約数の個数: 80

約数和(自身を含む): 345561216

約数和(自身を除く): 216839808

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 181, 192, 256, 362, 384, 463, 512, 543, 724, 768, 926, 1086, 1389, 1448, 1536, 1852, 2172, 2778, 2896, 3704, 4344, 5556, 5792, 7408, 8688, 11112, 11584, 14816, 17376, 22224, 23168, 29632, 34752, 44448, 46336, 59264, 69504, 83803, 88896, 92672, 118528, 139008, 167606, 177792, 237056, 251409, 278016, 335212, 355584, 502818, 670424, 711168, 1005636, 1340848, 2011272, 2681696, 4022544, 5363392, 8045088, 10726784, 16090176, 21453568, 32180352, 42907136, 64360704, 128721408]

約数ペア:

[(1, 128721408), (2, 64360704), (3, 42907136), (4, 32180352), (6, 21453568), (8, 16090176), (12, 10726784), (16, 8045088), (24, 5363392), (32, 4022544), (48, 2681696), (64, 2011272), (96, 1340848), (128, 1005636), (181, 711168), (192, 670424), (256, 502818), (362, 355584), (384, 335212), (463, 278016), (512, 251409), (543, 237056), (724, 177792), (768, 167606), (926, 139008), (1086, 118528), (1389, 92672), (1448, 88896), (1536, 83803), (1852, 69504), (2172, 59264), (2778, 46336), (2896, 44448), (3704, 34752), (4344, 29632), (5556, 23168), (5792, 22224), (7408, 17376), (8688, 14816), (11112, 11584)]