40002560

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{601}}^1$

素因数の和:639

約数の個数: 88

約数和(自身を含む): 103512696

約数和(自身を除く): 63510136

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, 601, 640, 832, 1024, 1040, 1202, 1280, 1664, 2080, 2404, 2560, 3005, 3328, 4160, 4808, 5120, 6010, 6656, 7813, 8320, 9616, 12020, 13312, 15626, 16640, 19232, 24040, 31252, 33280, 38464, 39065, 48080, 62504, 66560, 76928, 78130, 96160, 125008, 153856, 156260, 192320, 250016, 307712, 312520, 384640, 500032, 615424, 625040, 769280, 1000064, 1250080, 1538560, 2000128, 2500160, 3077120, 4000256, 5000320, 8000512, 10000640, 20001280, 40002560]

約数ペア:

[(1, 40002560), (2, 20001280), (4, 10000640), (5, 8000512), (8, 5000320), (10, 4000256), (13, 3077120), (16, 2500160), (20, 2000128), (26, 1538560), (32, 1250080), (40, 1000064), (52, 769280), (64, 625040), (65, 615424), (80, 500032), (104, 384640), (128, 312520), (130, 307712), (160, 250016), (208, 192320), (256, 156260), (260, 153856), (320, 125008), (416, 96160), (512, 78130), (520, 76928), (601, 66560), (640, 62504), (832, 48080), (1024, 39065), (1040, 38464), (1202, 33280), (1280, 31252), (1664, 24040), (2080, 19232), (2404, 16640), (2560, 15626), (3005, 13312), (3328, 12020), (4160, 9616), (4808, 8320), (5120, 7813), (6010, 6656)]