18897812

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{281}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 37521792

約数和(自身を除く): 18623980

約数列:

[1, 2, 4, 17, 23, 34, 43, 46, 68, 86, 92, 172, 281, 391, 562, 731, 782, 989, 1124, 1462, 1564, 1978, 2924, 3956, 4777, 6463, 9554, 12083, 12926, 16813, 19108, 24166, 25852, 33626, 48332, 67252, 109871, 205411, 219742, 277909, 410822, 439484, 555818, 821644, 1111636, 4724453, 9448906, 18897812]

約数ペア:

[(1, 18897812), (2, 9448906), (4, 4724453), (17, 1111636), (23, 821644), (34, 555818), (43, 439484), (46, 410822), (68, 277909), (86, 219742), (92, 205411), (172, 109871), (281, 67252), (391, 48332), (562, 33626), (731, 25852), (782, 24166), (989, 19108), (1124, 16813), (1462, 12926), (1564, 12083), (1978, 9554), (2924, 6463), (3956, 4777)]