81999616

素因数分解:

$2^8\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 171082800

約数和(自身を除く): 89083184

約数列:

[1, 2, 4, 8, 16, 32, 59, 61, 64, 89, 118, 122, 128, 178, 236, 244, 256, 356, 472, 488, 712, 944, 976, 1424, 1888, 1952, 2848, 3599, 3776, 3904, 5251, 5429, 5696, 7198, 7552, 7808, 10502, 10858, 11392, 14396, 15104, 15616, 21004, 21716, 22784, 28792, 42008, 43432, 57584, 84016, 86864, 115168, 168032, 173728, 230336, 320311, 336064, 347456, 460672, 640622, 672128, 694912, 921344, 1281244, 1344256, 1389824, 2562488, 5124976, 10249952, 20499904, 40999808, 81999616]

約数ペア:

[(1, 81999616), (2, 40999808), (4, 20499904), (8, 10249952), (16, 5124976), (32, 2562488), (59, 1389824), (61, 1344256), (64, 1281244), (89, 921344), (118, 694912), (122, 672128), (128, 640622), (178, 460672), (236, 347456), (244, 336064), (256, 320311), (356, 230336), (472, 173728), (488, 168032), (712, 115168), (944, 86864), (976, 84016), (1424, 57584), (1888, 43432), (1952, 42008), (2848, 28792), (3599, 22784), (3776, 21716), (3904, 21004), (5251, 15616), (5429, 15104), (5696, 14396), (7198, 11392), (7552, 10858), (7808, 10502)]