66517640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{237563}}^1$

素因数の和:237581

約数の個数: 32

約数和(自身を含む): 171046080

約数和(自身を除く): 104528440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 237563, 475126, 950252, 1187815, 1662941, 1900504, 2375630, 3325882, 4751260, 6651764, 8314705, 9502520, 13303528, 16629410, 33258820, 66517640]

約数ペア:

[(1, 66517640), (2, 33258820), (4, 16629410), (5, 13303528), (7, 9502520), (8, 8314705), (10, 6651764), (14, 4751260), (20, 3325882), (28, 2375630), (35, 1900504), (40, 1662941), (56, 1187815), (70, 950252), (140, 475126), (280, 237563)]