19959320

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3929}}^1$

素因数の和:4067

約数の個数: 32

約数和(自身を含む): 45273600

約数和(自身を除く): 25314280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 3929, 5080, 7858, 15716, 19645, 31432, 39290, 78580, 157160, 498983, 997966, 1995932, 2494915, 3991864, 4989830, 9979660, 19959320]

約数ペア:

[(1, 19959320), (2, 9979660), (4, 4989830), (5, 3991864), (8, 2494915), (10, 1995932), (20, 997966), (40, 498983), (127, 157160), (254, 78580), (508, 39290), (635, 31432), (1016, 19645), (1270, 15716), (2540, 7858), (3929, 5080)]