19949943

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{19}}^2\times {\mathrm{109}}^1$

素因数の和:176

約数の個数: 36

約数和(自身を含む): 30678120

約数和(自身を除く): 10728177

約数列:

[1, 3, 13, 19, 39, 57, 109, 169, 247, 327, 361, 507, 741, 1083, 1417, 2071, 3211, 4251, 4693, 6213, 9633, 14079, 18421, 26923, 39349, 55263, 61009, 80769, 118047, 183027, 349999, 511537, 1049997, 1534611, 6649981, 19949943]

約数ペア:

[(1, 19949943), (3, 6649981), (13, 1534611), (19, 1049997), (39, 511537), (57, 349999), (109, 183027), (169, 118047), (247, 80769), (327, 61009), (361, 55263), (507, 39349), (741, 26923), (1083, 18421), (1417, 14079), (2071, 9633), (3211, 6213), (4251, 4693)]