20897536

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:249

約数の個数: 72

約数和(自身を含む): 46873008

約数和(自身を除く): 25975472

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 41, 44, 64, 82, 88, 128, 164, 176, 181, 256, 328, 352, 362, 451, 656, 704, 724, 902, 1312, 1408, 1448, 1804, 1991, 2624, 2816, 2896, 3608, 3982, 5248, 5792, 7216, 7421, 7964, 10496, 11584, 14432, 14842, 15928, 23168, 28864, 29684, 31856, 46336, 57728, 59368, 63712, 81631, 115456, 118736, 127424, 163262, 237472, 254848, 326524, 474944, 509696, 653048, 949888, 1306096, 1899776, 2612192, 5224384, 10448768, 20897536]

約数ペア:

[(1, 20897536), (2, 10448768), (4, 5224384), (8, 2612192), (11, 1899776), (16, 1306096), (22, 949888), (32, 653048), (41, 509696), (44, 474944), (64, 326524), (82, 254848), (88, 237472), (128, 163262), (164, 127424), (176, 118736), (181, 115456), (256, 81631), (328, 63712), (352, 59368), (362, 57728), (451, 46336), (656, 31856), (704, 29684), (724, 28864), (902, 23168), (1312, 15928), (1408, 14842), (1448, 14432), (1804, 11584), (1991, 10496), (2624, 7964), (2816, 7421), (2896, 7216), (3608, 5792), (3982, 5248)]