18781168

素因数分解:

$2^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2749}}^1$

素因数の和:2825

約数の個数: 40

約数和(自身を含む): 42284000

約数和(自身を除く): 23502832

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 61, 112, 122, 244, 427, 488, 854, 976, 1708, 2749, 3416, 5498, 6832, 10996, 19243, 21992, 38486, 43984, 76972, 153944, 167689, 307888, 335378, 670756, 1173823, 1341512, 2347646, 2683024, 4695292, 9390584, 18781168]

約数ペア:

[(1, 18781168), (2, 9390584), (4, 4695292), (7, 2683024), (8, 2347646), (14, 1341512), (16, 1173823), (28, 670756), (56, 335378), (61, 307888), (112, 167689), (122, 153944), (244, 76972), (427, 43984), (488, 38486), (854, 21992), (976, 19243), (1708, 10996), (2749, 6832), (3416, 5498)]