18416728

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 40043520

約数和(自身を除く): 21626792

約数列:

[1, 2, 4, 8, 11, 22, 31, 43, 44, 62, 86, 88, 124, 157, 172, 248, 314, 341, 344, 473, 628, 682, 946, 1256, 1333, 1364, 1727, 1892, 2666, 2728, 3454, 3784, 4867, 5332, 6751, 6908, 9734, 10664, 13502, 13816, 14663, 19468, 27004, 29326, 38936, 53537, 54008, 58652, 74261, 107074, 117304, 148522, 209281, 214148, 297044, 418562, 428296, 594088, 837124, 1674248, 2302091, 4604182, 9208364, 18416728]

約数ペア:

[(1, 18416728), (2, 9208364), (4, 4604182), (8, 2302091), (11, 1674248), (22, 837124), (31, 594088), (43, 428296), (44, 418562), (62, 297044), (86, 214148), (88, 209281), (124, 148522), (157, 117304), (172, 107074), (248, 74261), (314, 58652), (341, 54008), (344, 53537), (473, 38936), (628, 29326), (682, 27004), (946, 19468), (1256, 14663), (1333, 13816), (1364, 13502), (1727, 10664), (1892, 9734), (2666, 6908), (2728, 6751), (3454, 5332), (3784, 4867)]