21190912

素因数分解:

$2^8\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:159

約数の個数: 72

約数和(自身を含む): 45622080

約数和(自身を除く): 24431168

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 59, 61, 64, 92, 118, 122, 128, 184, 236, 244, 256, 368, 472, 488, 736, 944, 976, 1357, 1403, 1472, 1888, 1952, 2714, 2806, 2944, 3599, 3776, 3904, 5428, 5612, 5888, 7198, 7552, 7808, 10856, 11224, 14396, 15104, 15616, 21712, 22448, 28792, 43424, 44896, 57584, 82777, 86848, 89792, 115168, 165554, 173696, 179584, 230336, 331108, 347392, 359168, 460672, 662216, 921344, 1324432, 2648864, 5297728, 10595456, 21190912]

約数ペア:

[(1, 21190912), (2, 10595456), (4, 5297728), (8, 2648864), (16, 1324432), (23, 921344), (32, 662216), (46, 460672), (59, 359168), (61, 347392), (64, 331108), (92, 230336), (118, 179584), (122, 173696), (128, 165554), (184, 115168), (236, 89792), (244, 86848), (256, 82777), (368, 57584), (472, 44896), (488, 43424), (736, 28792), (944, 22448), (976, 21712), (1357, 15616), (1403, 15104), (1472, 14396), (1888, 11224), (1952, 10856), (2714, 7808), (2806, 7552), (2944, 7198), (3599, 5888), (3776, 5612), (3904, 5428)]