40801280

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{613}}^1$

素因数の和:651

約数の個数: 88

約数和(自身を含む): 105576072

約数和(自身を除く): 64774792

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 613, 640, 832, 1024, 1040, 1226, 1280, 1664, 2080, 2452, 2560, 3065, 3328, 4160, 4904, 5120, 6130, 6656, 7969, 8320, 9808, 12260, 13312, 15938, 16640, 19616, 24520, 31876, 33280, 39232, 39845, 49040, 63752, 66560, 78464, 79690, 98080, 127504, 156928, 159380, 196160, 255008, 313856, 318760, 392320, 510016, 627712, 637520, 784640, 1020032, 1275040, 1569280, 2040064, 2550080, 3138560, 4080128, 5100160, 8160256, 10200320, 20400640, 40801280]

約数ペア:

[(1, 40801280), (2, 20400640), (4, 10200320), (5, 8160256), (8, 5100160), (10, 4080128), (13, 3138560), (16, 2550080), (20, 2040064), (26, 1569280), (32, 1275040), (40, 1020032), (52, 784640), (64, 637520), (65, 627712), (80, 510016), (104, 392320), (128, 318760), (130, 313856), (160, 255008), (208, 196160), (256, 159380), (260, 156928), (320, 127504), (416, 98080), (512, 79690), (520, 78464), (613, 66560), (640, 63752), (832, 49040), (1024, 39845), (1040, 39232), (1226, 33280), (1280, 31876), (1664, 24520), (2080, 19616), (2452, 16640), (2560, 15938), (3065, 13312), (3328, 12260), (4160, 9808), (4904, 8320), (5120, 7969), (6130, 6656)]