21990959930

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{289469}}^1$

素因数の和:289654

約数の個数: 32

約数和(自身を含む): 40516536960

約数和(自身を除く): 18525577030

約数列:

[1, 2, 5, 10, 71, 107, 142, 214, 355, 535, 710, 1070, 7597, 15194, 37985, 75970, 289469, 578938, 1447345, 2894690, 20552299, 30973183, 41104598, 61946366, 102761495, 154865915, 205522990, 309731830, 2199095993, 4398191986, 10995479965, 21990959930]

約数ペア:

[(1, 21990959930), (2, 10995479965), (5, 4398191986), (10, 2199095993), (71, 309731830), (107, 205522990), (142, 154865915), (214, 102761495), (355, 61946366), (535, 41104598), (710, 30973183), (1070, 20552299), (7597, 2894690), (15194, 1447345), (37985, 578938), (75970, 289469)]