131511040

素因数分解:

$2^8\times 5^1\times {\mathrm{127}}^1\times {\mathrm{809}}^1$

素因数の和:957

約数の個数: 72

約数和(自身を含む): 317882880

約数和(自身を除く): 186371840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 256, 320, 508, 635, 640, 809, 1016, 1270, 1280, 1618, 2032, 2540, 3236, 4045, 4064, 5080, 6472, 8090, 8128, 10160, 12944, 16180, 16256, 20320, 25888, 32360, 32512, 40640, 51776, 64720, 81280, 102743, 103552, 129440, 162560, 205486, 207104, 258880, 410972, 513715, 517760, 821944, 1027430, 1035520, 1643888, 2054860, 3287776, 4109720, 6575552, 8219440, 13151104, 16438880, 26302208, 32877760, 65755520, 131511040]

約数ペア:

[(1, 131511040), (2, 65755520), (4, 32877760), (5, 26302208), (8, 16438880), (10, 13151104), (16, 8219440), (20, 6575552), (32, 4109720), (40, 3287776), (64, 2054860), (80, 1643888), (127, 1035520), (128, 1027430), (160, 821944), (254, 517760), (256, 513715), (320, 410972), (508, 258880), (635, 207104), (640, 205486), (809, 162560), (1016, 129440), (1270, 103552), (1280, 102743), (1618, 81280), (2032, 64720), (2540, 51776), (3236, 40640), (4045, 32512), (4064, 32360), (5080, 25888), (6472, 20320), (8090, 16256), (8128, 16180), (10160, 12944)]