21397545

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{463}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 40535040

約数和(自身を除く): 19137495

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 79, 117, 195, 237, 395, 463, 585, 711, 1027, 1185, 1389, 2315, 3081, 3555, 4167, 5135, 6019, 6945, 9243, 15405, 18057, 20835, 30095, 36577, 46215, 54171, 90285, 109731, 182885, 270855, 329193, 475501, 548655, 1426503, 1645965, 2377505, 4279509, 7132515, 21397545]

約数ペア:

[(1, 21397545), (3, 7132515), (5, 4279509), (9, 2377505), (13, 1645965), (15, 1426503), (39, 548655), (45, 475501), (65, 329193), (79, 270855), (117, 182885), (195, 109731), (237, 90285), (395, 54171), (463, 46215), (585, 36577), (711, 30095), (1027, 20835), (1185, 18057), (1389, 15405), (2315, 9243), (3081, 6945), (3555, 6019), (4167, 5135)]