21605025

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{22159}}^1$

素因数の和:22185

約数の個数: 24

約数和(自身を含む): 38469760

約数和(自身を除く): 16864735

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 22159, 66477, 110795, 288067, 332385, 553975, 864201, 1440335, 1661925, 4321005, 7201675, 21605025]

約数ペア:

[(1, 21605025), (3, 7201675), (5, 4321005), (13, 1661925), (15, 1440335), (25, 864201), (39, 553975), (65, 332385), (75, 288067), (195, 110795), (325, 66477), (975, 22159)]