15420321

素因数分解:

$3^3\times 7^1\times {\mathrm{83}}^1\times {\mathrm{983}}^1$

素因数の和:1082

約数の個数: 32

約数和(自身を含む): 26449920

約数和(自身を除く): 11029599

約数列:

[1, 3, 7, 9, 21, 27, 63, 83, 189, 249, 581, 747, 983, 1743, 2241, 2949, 5229, 6881, 8847, 15687, 20643, 26541, 61929, 81589, 185787, 244767, 571123, 734301, 1713369, 2202903, 5140107, 15420321]

約数ペア:

[(1, 15420321), (3, 5140107), (7, 2202903), (9, 1713369), (21, 734301), (27, 571123), (63, 244767), (83, 185787), (189, 81589), (249, 61929), (581, 26541), (747, 20643), (983, 15687), (1743, 8847), (2241, 6881), (2949, 5229)]