817502720

素因数分解:

$2^9\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1621}}^1$

素因数の和:1841

約数の個数: 80

約数和(自身を含む): 1971255528

約数和(自身を除く): 1153752808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 197, 256, 320, 394, 512, 640, 788, 985, 1280, 1576, 1621, 1970, 2560, 3152, 3242, 3940, 6304, 6484, 7880, 8105, 12608, 12968, 15760, 16210, 25216, 25936, 31520, 32420, 50432, 51872, 63040, 64840, 100864, 103744, 126080, 129680, 207488, 252160, 259360, 319337, 414976, 504320, 518720, 638674, 829952, 1037440, 1277348, 1596685, 2074880, 2554696, 3193370, 4149760, 5109392, 6386740, 10218784, 12773480, 20437568, 25546960, 40875136, 51093920, 81750272, 102187840, 163500544, 204375680, 408751360, 817502720]

約数ペア:

[(1, 817502720), (2, 408751360), (4, 204375680), (5, 163500544), (8, 102187840), (10, 81750272), (16, 51093920), (20, 40875136), (32, 25546960), (40, 20437568), (64, 12773480), (80, 10218784), (128, 6386740), (160, 5109392), (197, 4149760), (256, 3193370), (320, 2554696), (394, 2074880), (512, 1596685), (640, 1277348), (788, 1037440), (985, 829952), (1280, 638674), (1576, 518720), (1621, 504320), (1970, 414976), (2560, 319337), (3152, 259360), (3242, 252160), (3940, 207488), (6304, 129680), (6484, 126080), (7880, 103744), (8105, 100864), (12608, 64840), (12968, 63040), (15760, 51872), (16210, 50432), (25216, 32420), (25936, 31520)]