865431860

素因数分解:

$2^2\times 5^1\times {\mathrm{10799}}^1\times {\mathrm{4007}}^1$

素因数の和:14815

約数の個数: 24

約数和(自身を含む): 1818028800

約数和(自身を除く): 952596940

約数列:

[1, 2, 4, 5, 10, 20, 4007, 8014, 10799, 16028, 20035, 21598, 40070, 43196, 53995, 80140, 107990, 215980, 43271593, 86543186, 173086372, 216357965, 432715930, 865431860]

約数ペア:

[(1, 865431860), (2, 432715930), (4, 216357965), (5, 173086372), (10, 86543186), (20, 43271593), (4007, 215980), (8014, 107990), (10799, 80140), (16028, 53995), (20035, 43196), (21598, 40070)]