17981885

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 24105600

約数和(自身を除く): 6123715

約数列:

[1, 5, 19, 29, 61, 95, 107, 145, 305, 535, 551, 1159, 1769, 2033, 2755, 3103, 5795, 6527, 8845, 10165, 15515, 32635, 33611, 58957, 124013, 168055, 189283, 294785, 620065, 946415, 3596377, 17981885]

約数ペア:

[(1, 17981885), (5, 3596377), (19, 946415), (29, 620065), (61, 294785), (95, 189283), (107, 168055), (145, 124013), (305, 58957), (535, 33611), (551, 32635), (1159, 15515), (1769, 10165), (2033, 8845), (2755, 6527), (3103, 5795)]