155882020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{557}}^1\times {\mathrm{1999}}^1$

素因数の和:2572

約数の個数: 48

約数和(自身を含む): 374976000

約数和(自身を除く): 219093980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 557, 1114, 1999, 2228, 2785, 3899, 3998, 5570, 7798, 7996, 9995, 11140, 13993, 15596, 19495, 19990, 27986, 38990, 39980, 55972, 69965, 77980, 139930, 279860, 1113443, 2226886, 4453772, 5567215, 7794101, 11134430, 15588202, 22268860, 31176404, 38970505, 77941010, 155882020]

約数ペア:

[(1, 155882020), (2, 77941010), (4, 38970505), (5, 31176404), (7, 22268860), (10, 15588202), (14, 11134430), (20, 7794101), (28, 5567215), (35, 4453772), (70, 2226886), (140, 1113443), (557, 279860), (1114, 139930), (1999, 77980), (2228, 69965), (2785, 55972), (3899, 39980), (3998, 38990), (5570, 27986), (7798, 19990), (7996, 19495), (9995, 15596), (11140, 13993)]