20120990

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{641}}^1$

素因数の和:764

約数の個数: 32

約数和(自身を含む): 37626336

約数和(自身を除く): 17505346

約数列:

[1, 2, 5, 10, 43, 73, 86, 146, 215, 365, 430, 641, 730, 1282, 3139, 3205, 6278, 6410, 15695, 27563, 31390, 46793, 55126, 93586, 137815, 233965, 275630, 467930, 2012099, 4024198, 10060495, 20120990]

約数ペア:

[(1, 20120990), (2, 10060495), (5, 4024198), (10, 2012099), (43, 467930), (73, 275630), (86, 233965), (146, 137815), (215, 93586), (365, 55126), (430, 46793), (641, 31390), (730, 27563), (1282, 15695), (3139, 6410), (3205, 6278)]