19974560

素因数分解:

$2^5\times 5^1\times {\mathrm{127}}^1\times {\mathrm{983}}^1$

素因数の和:1125

約数の個数: 48

約数和(自身を含む): 47609856

約数和(自身を除く): 27635296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 127, 160, 254, 508, 635, 983, 1016, 1270, 1966, 2032, 2540, 3932, 4064, 4915, 5080, 7864, 9830, 10160, 15728, 19660, 20320, 31456, 39320, 78640, 124841, 157280, 249682, 499364, 624205, 998728, 1248410, 1997456, 2496820, 3994912, 4993640, 9987280, 19974560]

約数ペア:

[(1, 19974560), (2, 9987280), (4, 4993640), (5, 3994912), (8, 2496820), (10, 1997456), (16, 1248410), (20, 998728), (32, 624205), (40, 499364), (80, 249682), (127, 157280), (160, 124841), (254, 78640), (508, 39320), (635, 31456), (983, 20320), (1016, 19660), (1270, 15728), (1966, 10160), (2032, 9830), (2540, 7864), (3932, 5080), (4064, 4915)]