71131720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{3943}}^1$

素因数の和:4006

約数の個数: 64

約数和(自身を含む): 178899840

約数和(自身を除く): 107768120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 164, 205, 220, 328, 410, 440, 451, 820, 902, 1640, 1804, 2255, 3608, 3943, 4510, 7886, 9020, 15772, 18040, 19715, 31544, 39430, 43373, 78860, 86746, 157720, 161663, 173492, 216865, 323326, 346984, 433730, 646652, 808315, 867460, 1293304, 1616630, 1734920, 1778293, 3233260, 3556586, 6466520, 7113172, 8891465, 14226344, 17782930, 35565860, 71131720]

約数ペア:

[(1, 71131720), (2, 35565860), (4, 17782930), (5, 14226344), (8, 8891465), (10, 7113172), (11, 6466520), (20, 3556586), (22, 3233260), (40, 1778293), (41, 1734920), (44, 1616630), (55, 1293304), (82, 867460), (88, 808315), (110, 646652), (164, 433730), (205, 346984), (220, 323326), (328, 216865), (410, 173492), (440, 161663), (451, 157720), (820, 86746), (902, 78860), (1640, 43373), (1804, 39430), (2255, 31544), (3608, 19715), (3943, 18040), (4510, 15772), (7886, 9020)]