29945020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1999}}^1$

素因数の和:2122

約数の個数: 48

約数和(自身を含む): 72576000

約数和(自身を除く): 42630980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1498, 1999, 2140, 2996, 3745, 3998, 7490, 7996, 9995, 13993, 14980, 19990, 27986, 39980, 55972, 69965, 139930, 213893, 279860, 427786, 855572, 1069465, 1497251, 2138930, 2994502, 4277860, 5989004, 7486255, 14972510, 29945020]

約数ペア:

[(1, 29945020), (2, 14972510), (4, 7486255), (5, 5989004), (7, 4277860), (10, 2994502), (14, 2138930), (20, 1497251), (28, 1069465), (35, 855572), (70, 427786), (107, 279860), (140, 213893), (214, 139930), (428, 69965), (535, 55972), (749, 39980), (1070, 27986), (1498, 19990), (1999, 14980), (2140, 13993), (2996, 9995), (3745, 7996), (3998, 7490)]