127405160

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{4969}}^1$

素因数の和:5621

約数の個数: 32

約数和(自身を含む): 287166600

約数和(自身を除く): 159761440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2564, 3205, 4969, 5128, 6410, 9938, 12820, 19876, 24845, 25640, 39752, 49690, 99380, 198760, 3185129, 6370258, 12740516, 15925645, 25481032, 31851290, 63702580, 127405160]

約数ペア:

[(1, 127405160), (2, 63702580), (4, 31851290), (5, 25481032), (8, 15925645), (10, 12740516), (20, 6370258), (40, 3185129), (641, 198760), (1282, 99380), (2564, 49690), (3205, 39752), (4969, 25640), (5128, 24845), (6410, 19876), (9938, 12820)]