218771960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{373}}^1$

素因数の和:469

約数の個数: 128

約数和(自身を含む): 568719360

約数和(自身を除く): 349947400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 43, 44, 55, 62, 86, 88, 110, 124, 155, 172, 215, 220, 248, 310, 341, 344, 373, 430, 440, 473, 620, 682, 746, 860, 946, 1240, 1333, 1364, 1492, 1705, 1720, 1865, 1892, 2365, 2666, 2728, 2984, 3410, 3730, 3784, 4103, 4730, 5332, 6665, 6820, 7460, 8206, 9460, 10664, 11563, 13330, 13640, 14663, 14920, 16039, 16412, 18920, 20515, 23126, 26660, 29326, 32078, 32824, 41030, 46252, 53320, 57815, 58652, 64156, 73315, 80195, 82060, 92504, 115630, 117304, 127193, 128312, 146630, 160390, 164120, 176429, 231260, 254386, 293260, 320780, 352858, 462520, 497209, 508772, 586520, 635965, 641560, 705716, 882145, 994418, 1017544, 1271930, 1411432, 1764290, 1988836, 2486045, 2543860, 3528580, 3977672, 4972090, 5087720, 5469299, 7057160, 9944180, 10938598, 19888360, 21877196, 27346495, 43754392, 54692990, 109385980, 218771960]

約数ペア:

[(1, 218771960), (2, 109385980), (4, 54692990), (5, 43754392), (8, 27346495), (10, 21877196), (11, 19888360), (20, 10938598), (22, 9944180), (31, 7057160), (40, 5469299), (43, 5087720), (44, 4972090), (55, 3977672), (62, 3528580), (86, 2543860), (88, 2486045), (110, 1988836), (124, 1764290), (155, 1411432), (172, 1271930), (215, 1017544), (220, 994418), (248, 882145), (310, 705716), (341, 641560), (344, 635965), (373, 586520), (430, 508772), (440, 497209), (473, 462520), (620, 352858), (682, 320780), (746, 293260), (860, 254386), (946, 231260), (1240, 176429), (1333, 164120), (1364, 160390), (1492, 146630), (1705, 128312), (1720, 127193), (1865, 117304), (1892, 115630), (2365, 92504), (2666, 82060), (2728, 80195), (2984, 73315), (3410, 64156), (3730, 58652), (3784, 57815), (4103, 53320), (4730, 46252), (5332, 41030), (6665, 32824), (6820, 32078), (7460, 29326), (8206, 26660), (9460, 23126), (10664, 20515), (11563, 18920), (13330, 16412), (13640, 16039), (14663, 14920)]