256800770

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1\times {\mathrm{2089}}^1$

素因数の和:2762

約数の個数: 32

約数和(自身を含む): 487555200

約数和(自身を除く): 230754430

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 647, 1294, 2089, 3235, 4178, 6470, 10445, 12293, 20890, 24586, 39691, 61465, 79382, 122930, 198455, 396910, 1351583, 2703166, 6757915, 13515830, 25680077, 51360154, 128400385, 256800770]

約数ペア:

[(1, 256800770), (2, 128400385), (5, 51360154), (10, 25680077), (19, 13515830), (38, 6757915), (95, 2703166), (190, 1351583), (647, 396910), (1294, 198455), (2089, 122930), (3235, 79382), (4178, 61465), (6470, 39691), (10445, 24586), (12293, 20890)]