197802020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{3823}}^1$

素因数の和:4044

約数の個数: 48

約数和(自身を含む): 449702400

約数和(自身を除く): 251900380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 199, 260, 398, 796, 995, 1990, 2587, 3823, 3980, 5174, 7646, 10348, 12935, 15292, 19115, 25870, 38230, 49699, 51740, 76460, 99398, 198796, 248495, 496990, 760777, 993980, 1521554, 3043108, 3803885, 7607770, 9890101, 15215540, 19780202, 39560404, 49450505, 98901010, 197802020]

約数ペア:

[(1, 197802020), (2, 98901010), (4, 49450505), (5, 39560404), (10, 19780202), (13, 15215540), (20, 9890101), (26, 7607770), (52, 3803885), (65, 3043108), (130, 1521554), (199, 993980), (260, 760777), (398, 496990), (796, 248495), (995, 198796), (1990, 99398), (2587, 76460), (3823, 51740), (3980, 49699), (5174, 38230), (7646, 25870), (10348, 19115), (12935, 15292)]