257788290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1\times {\mathrm{823}}^1$

素因数の和:1083

約数の個数: 64

約数和(自身を含む): 634334976

約数和(自身を除く): 376546686

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 53, 106, 159, 197, 265, 318, 394, 530, 591, 795, 823, 985, 1182, 1590, 1646, 1970, 2469, 2955, 4115, 4938, 5910, 8230, 10441, 12345, 20882, 24690, 31323, 43619, 52205, 62646, 87238, 104410, 130857, 156615, 162131, 218095, 261714, 313230, 324262, 436190, 486393, 654285, 810655, 972786, 1308570, 1621310, 2431965, 4863930, 8592943, 17185886, 25778829, 42964715, 51557658, 85929430, 128894145, 257788290]

約数ペア:

[(1, 257788290), (2, 128894145), (3, 85929430), (5, 51557658), (6, 42964715), (10, 25778829), (15, 17185886), (30, 8592943), (53, 4863930), (106, 2431965), (159, 1621310), (197, 1308570), (265, 972786), (318, 810655), (394, 654285), (530, 486393), (591, 436190), (795, 324262), (823, 313230), (985, 261714), (1182, 218095), (1590, 162131), (1646, 156615), (1970, 130857), (2469, 104410), (2955, 87238), (4115, 62646), (4938, 52205), (5910, 43619), (8230, 31323), (10441, 24690), (12345, 20882)]