80971520

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{1291}}^1$

素因数の和:1326

約数の個数: 108

約数和(自身を含む): 225792504

約数和(自身を除く): 144820984

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 392, 448, 490, 560, 640, 784, 896, 980, 1120, 1280, 1291, 1568, 1792, 1960, 2240, 2582, 3136, 3920, 4480, 5164, 6272, 6455, 7840, 8960, 9037, 10328, 12544, 12910, 15680, 18074, 20656, 25820, 31360, 36148, 41312, 45185, 51640, 62720, 63259, 72296, 82624, 90370, 103280, 126518, 144592, 165248, 180740, 206560, 253036, 289184, 316295, 330496, 361480, 413120, 506072, 578368, 632590, 722960, 826240, 1012144, 1156736, 1265180, 1445920, 1652480, 2024288, 2313472, 2530360, 2891840, 4048576, 5060720, 5783680, 8097152, 10121440, 11567360, 16194304, 20242880, 40485760, 80971520]

約数ペア:

[(1, 80971520), (2, 40485760), (4, 20242880), (5, 16194304), (7, 11567360), (8, 10121440), (10, 8097152), (14, 5783680), (16, 5060720), (20, 4048576), (28, 2891840), (32, 2530360), (35, 2313472), (40, 2024288), (49, 1652480), (56, 1445920), (64, 1265180), (70, 1156736), (80, 1012144), (98, 826240), (112, 722960), (128, 632590), (140, 578368), (160, 506072), (196, 413120), (224, 361480), (245, 330496), (256, 316295), (280, 289184), (320, 253036), (392, 206560), (448, 180740), (490, 165248), (560, 144592), (640, 126518), (784, 103280), (896, 90370), (980, 82624), (1120, 72296), (1280, 63259), (1291, 62720), (1568, 51640), (1792, 45185), (1960, 41312), (2240, 36148), (2582, 31360), (3136, 25820), (3920, 20656), (4480, 18074), (5164, 15680), (6272, 12910), (6455, 12544), (7840, 10328), (8960, 9037)]