19987468

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{1453}}^1$

素因数の和:1657

約数の個数: 24

約数和(自身を含む): 37047920

約数和(自身を除く): 17060452

約数列:

[1, 2, 4, 19, 38, 76, 181, 362, 724, 1453, 2906, 3439, 5812, 6878, 13756, 27607, 55214, 110428, 262993, 525986, 1051972, 4996867, 9993734, 19987468]

約数ペア:

[(1, 19987468), (2, 9993734), (4, 4996867), (19, 1051972), (38, 525986), (76, 262993), (181, 110428), (362, 55214), (724, 27607), (1453, 13756), (2906, 6878), (3439, 5812)]