19488567

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:447

約数の個数: 32

約数和(自身を含む): 31306752

約数和(自身を除く): 11818185

約数列:

[1, 3, 7, 21, 23, 69, 157, 161, 257, 471, 483, 771, 1099, 1799, 3297, 3611, 5397, 5911, 10833, 17733, 25277, 40349, 41377, 75831, 121047, 124131, 282443, 847329, 928027, 2784081, 6496189, 19488567]

約数ペア:

[(1, 19488567), (3, 6496189), (7, 2784081), (21, 928027), (23, 847329), (69, 282443), (157, 124131), (161, 121047), (257, 75831), (471, 41377), (483, 40349), (771, 25277), (1099, 17733), (1799, 10833), (3297, 5911), (3611, 5397)]