172156520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{991}}^1$

素因数の和:1146

約数の個数: 64

約数和(自身を含む): 400688640

約数和(自身を除く): 228532120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 101, 172, 202, 215, 344, 404, 430, 505, 808, 860, 991, 1010, 1720, 1982, 2020, 3964, 4040, 4343, 4955, 7928, 8686, 9910, 17372, 19820, 21715, 34744, 39640, 42613, 43430, 85226, 86860, 100091, 170452, 173720, 200182, 213065, 340904, 400364, 426130, 500455, 800728, 852260, 1000910, 1704520, 2001820, 4003640, 4303913, 8607826, 17215652, 21519565, 34431304, 43039130, 86078260, 172156520]

約数ペア:

[(1, 172156520), (2, 86078260), (4, 43039130), (5, 34431304), (8, 21519565), (10, 17215652), (20, 8607826), (40, 4303913), (43, 4003640), (86, 2001820), (101, 1704520), (172, 1000910), (202, 852260), (215, 800728), (344, 500455), (404, 426130), (430, 400364), (505, 340904), (808, 213065), (860, 200182), (991, 173720), (1010, 170452), (1720, 100091), (1982, 86860), (2020, 85226), (3964, 43430), (4040, 42613), (4343, 39640), (4955, 34744), (7928, 21715), (8686, 19820), (9910, 17372)]