257559980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{559913}}^1$

素因数の和:559945

約数の個数: 24

約数和(自身を含む): 564393312

約数和(自身を除く): 306833332

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 559913, 1119826, 2239652, 2799565, 5599130, 11198260, 12877999, 25755998, 51511996, 64389995, 128779990, 257559980]

約数ペア:

[(1, 257559980), (2, 128779990), (4, 64389995), (5, 51511996), (10, 25755998), (20, 12877999), (23, 11198260), (46, 5599130), (92, 2799565), (115, 2239652), (230, 1119826), (460, 559913)]