64988690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:287

約数の個数: 64

約数和(自身を含む): 131453280

約数和(自身を除く): 66464590

約数列:

[1, 2, 5, 10, 13, 26, 41, 65, 82, 89, 130, 137, 178, 205, 274, 410, 445, 533, 685, 890, 1066, 1157, 1370, 1781, 2314, 2665, 3562, 3649, 5330, 5617, 5785, 7298, 8905, 11234, 11570, 12193, 17810, 18245, 24386, 28085, 36490, 47437, 56170, 60965, 73021, 94874, 121930, 146042, 158509, 237185, 317018, 365105, 474370, 499913, 730210, 792545, 999826, 1585090, 2499565, 4999130, 6498869, 12997738, 32494345, 64988690]

約数ペア:

[(1, 64988690), (2, 32494345), (5, 12997738), (10, 6498869), (13, 4999130), (26, 2499565), (41, 1585090), (65, 999826), (82, 792545), (89, 730210), (130, 499913), (137, 474370), (178, 365105), (205, 317018), (274, 237185), (410, 158509), (445, 146042), (533, 121930), (685, 94874), (890, 73021), (1066, 60965), (1157, 56170), (1370, 47437), (1781, 36490), (2314, 28085), (2665, 24386), (3562, 18245), (3649, 17810), (5330, 12193), (5617, 11570), (5785, 11234), (7298, 8905)]