257966390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{101963}}^1$

素因数の和:102004

約数の個数: 32

約数和(自身を含む): 528581376

約数和(自身を除く): 270614986

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 230, 253, 506, 1265, 2530, 101963, 203926, 509815, 1019630, 1121593, 2243186, 2345149, 4690298, 5607965, 11215930, 11725745, 23451490, 25796639, 51593278, 128983195, 257966390]

約数ペア:

[(1, 257966390), (2, 128983195), (5, 51593278), (10, 25796639), (11, 23451490), (22, 11725745), (23, 11215930), (46, 5607965), (55, 4690298), (110, 2345149), (115, 2243186), (230, 1121593), (253, 1019630), (506, 509815), (1265, 203926), (2530, 101963)]