21486339

素因数分解:

$3^2\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1427}}^1$

素因数の和:1679

約数の個数: 24

約数和(自身を含む): 35642880

約数和(自身を除く): 14156541

約数列:

[1, 3, 7, 9, 21, 63, 239, 717, 1427, 1673, 2151, 4281, 5019, 9989, 12843, 15057, 29967, 89901, 341053, 1023159, 2387371, 3069477, 7162113, 21486339]

約数ペア:

[(1, 21486339), (3, 7162113), (7, 3069477), (9, 2387371), (21, 1023159), (63, 341053), (239, 89901), (717, 29967), (1427, 15057), (1673, 12843), (2151, 9989), (4281, 5019)]