81559970

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{2179}}^1$

素因数の和:2402

約数の個数: 32

約数和(自身を含む): 155390400

約数和(自身を除く): 73830430

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 197, 394, 985, 1970, 2179, 3743, 4358, 7486, 10895, 18715, 21790, 37430, 41401, 82802, 207005, 414010, 429263, 858526, 2146315, 4292630, 8155997, 16311994, 40779985, 81559970]

約数ペア:

[(1, 81559970), (2, 40779985), (5, 16311994), (10, 8155997), (19, 4292630), (38, 2146315), (95, 858526), (190, 429263), (197, 414010), (394, 207005), (985, 82802), (1970, 41401), (2179, 37430), (3743, 21790), (4358, 18715), (7486, 10895)]