19850019

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{433}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 31664640

約数和(自身を除く): 11814621

約数列:

[1, 3, 7, 21, 37, 59, 111, 177, 259, 413, 433, 777, 1239, 1299, 2183, 3031, 6549, 9093, 15281, 16021, 25547, 45843, 48063, 76641, 112147, 178829, 336441, 536487, 945239, 2835717, 6616673, 19850019]

約数ペア:

[(1, 19850019), (3, 6616673), (7, 2835717), (21, 945239), (37, 536487), (59, 336441), (111, 178829), (177, 112147), (259, 76641), (413, 48063), (433, 45843), (777, 25547), (1239, 16021), (1299, 15281), (2183, 9093), (3031, 6549)]