81905098

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{709}}^1$

素因数の和:870

約数の個数: 32

約数和(自身を含む): 138024000

約数和(自身を除く): 56118902

約数列:

[1, 2, 11, 22, 59, 89, 118, 178, 649, 709, 979, 1298, 1418, 1958, 5251, 7799, 10502, 15598, 41831, 57761, 63101, 83662, 115522, 126202, 460141, 694111, 920282, 1388222, 3722959, 7445918, 40952549, 81905098]

約数ペア:

[(1, 81905098), (2, 40952549), (11, 7445918), (22, 3722959), (59, 1388222), (89, 920282), (118, 694111), (178, 460141), (649, 126202), (709, 115522), (979, 83662), (1298, 63101), (1418, 57761), (1958, 41831), (5251, 15598), (7799, 10502)]