18689960

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4817}}^1$

素因数の和:4925

約数の個数: 32

約数和(自身を含む): 42494760

約数和(自身を除く): 23804800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 4817, 9634, 19268, 24085, 38536, 48170, 96340, 192680, 467249, 934498, 1868996, 2336245, 3737992, 4672490, 9344980, 18689960]

約数ペア:

[(1, 18689960), (2, 9344980), (4, 4672490), (5, 3737992), (8, 2336245), (10, 1868996), (20, 934498), (40, 467249), (97, 192680), (194, 96340), (388, 48170), (485, 38536), (776, 24085), (970, 19268), (1940, 9634), (3880, 4817)]