81991808

素因数分解:

$2^7\times {\mathrm{61}}^1\times {\mathrm{10501}}^1$

素因数の和:10576

約数の個数: 32

約数和(自身を含む): 166036620

約数和(自身を除く): 84044812

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 122, 128, 244, 488, 976, 1952, 3904, 7808, 10501, 21002, 42004, 84008, 168016, 336032, 640561, 672064, 1281122, 1344128, 2562244, 5124488, 10248976, 20497952, 40995904, 81991808]

約数ペア:

[(1, 81991808), (2, 40995904), (4, 20497952), (8, 10248976), (16, 5124488), (32, 2562244), (61, 1344128), (64, 1281122), (122, 672064), (128, 640561), (244, 336032), (488, 168016), (976, 84008), (1952, 42004), (3904, 21002), (7808, 10501)]