254421640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:335

約数の個数: 128

約数和(自身を含む): 655257600

約数和(自身を除く): 400835960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 127, 145, 157, 220, 232, 254, 290, 314, 319, 440, 508, 580, 628, 635, 638, 785, 1016, 1160, 1256, 1270, 1276, 1397, 1570, 1595, 1727, 2540, 2552, 2794, 3140, 3190, 3454, 3683, 4553, 5080, 5588, 6280, 6380, 6908, 6985, 7366, 8635, 9106, 11176, 12760, 13816, 13970, 14732, 17270, 18212, 18415, 19939, 22765, 27940, 29464, 34540, 36424, 36830, 39878, 40513, 45530, 50083, 55880, 69080, 73660, 79756, 81026, 91060, 99695, 100166, 147320, 159512, 162052, 182120, 199390, 200332, 202565, 219329, 250415, 324104, 398780, 400664, 405130, 438658, 500830, 578231, 797560, 810260, 877316, 1001660, 1096645, 1156462, 1620520, 1754632, 2003320, 2193290, 2312924, 2891155, 4386580, 4625848, 5782310, 6360541, 8773160, 11564620, 12721082, 23129240, 25442164, 31802705, 50884328, 63605410, 127210820, 254421640]

約数ペア:

[(1, 254421640), (2, 127210820), (4, 63605410), (5, 50884328), (8, 31802705), (10, 25442164), (11, 23129240), (20, 12721082), (22, 11564620), (29, 8773160), (40, 6360541), (44, 5782310), (55, 4625848), (58, 4386580), (88, 2891155), (110, 2312924), (116, 2193290), (127, 2003320), (145, 1754632), (157, 1620520), (220, 1156462), (232, 1096645), (254, 1001660), (290, 877316), (314, 810260), (319, 797560), (440, 578231), (508, 500830), (580, 438658), (628, 405130), (635, 400664), (638, 398780), (785, 324104), (1016, 250415), (1160, 219329), (1256, 202565), (1270, 200332), (1276, 199390), (1397, 182120), (1570, 162052), (1595, 159512), (1727, 147320), (2540, 100166), (2552, 99695), (2794, 91060), (3140, 81026), (3190, 79756), (3454, 73660), (3683, 69080), (4553, 55880), (5080, 50083), (5588, 45530), (6280, 40513), (6380, 39878), (6908, 36830), (6985, 36424), (7366, 34540), (8635, 29464), (9106, 27940), (11176, 22765), (12760, 19939), (13816, 18415), (13970, 18212), (14732, 17270)]