21723008

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 46818000

約数和(自身を除く): 25094992

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 67, 68, 128, 134, 136, 149, 268, 272, 298, 536, 544, 596, 1072, 1088, 1139, 1192, 2144, 2176, 2278, 2384, 2533, 4288, 4556, 4768, 5066, 8576, 9112, 9536, 9983, 10132, 18224, 19072, 19966, 20264, 36448, 39932, 40528, 72896, 79864, 81056, 145792, 159728, 162112, 169711, 319456, 324224, 339422, 638912, 678844, 1277824, 1357688, 2715376, 5430752, 10861504, 21723008]

約数ペア:

[(1, 21723008), (2, 10861504), (4, 5430752), (8, 2715376), (16, 1357688), (17, 1277824), (32, 678844), (34, 638912), (64, 339422), (67, 324224), (68, 319456), (128, 169711), (134, 162112), (136, 159728), (149, 145792), (268, 81056), (272, 79864), (298, 72896), (536, 40528), (544, 39932), (596, 36448), (1072, 20264), (1088, 19966), (1139, 19072), (1192, 18224), (2144, 10132), (2176, 9983), (2278, 9536), (2384, 9112), (2533, 8576), (4288, 5066), (4556, 4768)]