129444760

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{16427}}^1$

素因数の和:16635

約数の個数: 32

約数和(自身を含む): 292746960

約数和(自身を除く): 163302200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 16427, 32854, 65708, 82135, 131416, 164270, 328540, 657080, 3236119, 6472238, 12944476, 16180595, 25888952, 32361190, 64722380, 129444760]

約数ペア:

[(1, 129444760), (2, 64722380), (4, 32361190), (5, 25888952), (8, 16180595), (10, 12944476), (20, 6472238), (40, 3236119), (197, 657080), (394, 328540), (788, 164270), (985, 131416), (1576, 82135), (1970, 65708), (3940, 32854), (7880, 16427)]