81938080

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{491}}^1$

素因数の和:662

約数の個数: 96

約数和(自身を含む): 223171200

約数和(自身を除く): 141233120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 149, 160, 224, 280, 298, 491, 560, 596, 745, 982, 1043, 1120, 1192, 1490, 1964, 2086, 2384, 2455, 2980, 3437, 3928, 4172, 4768, 4910, 5215, 5960, 6874, 7856, 8344, 9820, 10430, 11920, 13748, 15712, 16688, 17185, 19640, 20860, 23840, 27496, 33376, 34370, 39280, 41720, 54992, 68740, 73159, 78560, 83440, 109984, 137480, 146318, 166880, 274960, 292636, 365795, 512113, 549920, 585272, 731590, 1024226, 1170544, 1463180, 2048452, 2341088, 2560565, 2926360, 4096904, 5121130, 5852720, 8193808, 10242260, 11705440, 16387616, 20484520, 40969040, 81938080]

約数ペア:

[(1, 81938080), (2, 40969040), (4, 20484520), (5, 16387616), (7, 11705440), (8, 10242260), (10, 8193808), (14, 5852720), (16, 5121130), (20, 4096904), (28, 2926360), (32, 2560565), (35, 2341088), (40, 2048452), (56, 1463180), (70, 1170544), (80, 1024226), (112, 731590), (140, 585272), (149, 549920), (160, 512113), (224, 365795), (280, 292636), (298, 274960), (491, 166880), (560, 146318), (596, 137480), (745, 109984), (982, 83440), (1043, 78560), (1120, 73159), (1192, 68740), (1490, 54992), (1964, 41720), (2086, 39280), (2384, 34370), (2455, 33376), (2980, 27496), (3437, 23840), (3928, 20860), (4172, 19640), (4768, 17185), (4910, 16688), (5215, 15712), (5960, 13748), (6874, 11920), (7856, 10430), (8344, 9820)]