261720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{727}}^1$

素因数の和:744

約数の個数: 48

約数和(自身を含む): 851760

約数和(自身を除く): 590040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 727, 1454, 2181, 2908, 3635, 4362, 5816, 6543, 7270, 8724, 10905, 13086, 14540, 17448, 21810, 26172, 29080, 32715, 43620, 52344, 65430, 87240, 130860, 261720]

約数ペア:

[(1, 261720), (2, 130860), (3, 87240), (4, 65430), (5, 52344), (6, 43620), (8, 32715), (9, 29080), (10, 26172), (12, 21810), (15, 17448), (18, 14540), (20, 13086), (24, 10905), (30, 8724), (36, 7270), (40, 6543), (45, 5816), (60, 4362), (72, 3635), (90, 2908), (120, 2181), (180, 1454), (360, 727)]