18786747

素因数分解:

$3^1\times 7^2\times {\mathrm{227}}^1\times {\mathrm{563}}^1$

素因数の和:807

約数の個数: 24

約数和(自身を含む): 29318976

約数和(自身を除く): 10532229

約数列:

[1, 3, 7, 21, 49, 147, 227, 563, 681, 1589, 1689, 3941, 4767, 11123, 11823, 27587, 33369, 82761, 127801, 383403, 894607, 2683821, 6262249, 18786747]

約数ペア:

[(1, 18786747), (3, 6262249), (7, 2683821), (21, 894607), (49, 383403), (147, 127801), (227, 82761), (563, 33369), (681, 27587), (1589, 11823), (1689, 11123), (3941, 4767)]