19841871

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{223}}^2$

素因数の和:475

約数の個数: 24

約数和(自身を含む): 31969920

約数和(自身を除く): 12128049

約数列:

[1, 3, 7, 19, 21, 57, 133, 223, 399, 669, 1561, 4237, 4683, 12711, 29659, 49729, 88977, 149187, 348103, 944851, 1044309, 2834553, 6613957, 19841871]

約数ペア:

[(1, 19841871), (3, 6613957), (7, 2834553), (19, 1044309), (21, 944851), (57, 348103), (133, 149187), (223, 88977), (399, 49729), (669, 29659), (1561, 12711), (4237, 4683)]