21480615

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{503}}^1$

素因数の和:600

約数の個数: 48

約数和(自身を含む): 40727232

約数和(自身を除く): 19246617

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 73, 117, 195, 219, 365, 503, 585, 657, 949, 1095, 1509, 2515, 2847, 3285, 4527, 4745, 6539, 7545, 8541, 14235, 19617, 22635, 32695, 36719, 42705, 58851, 98085, 110157, 183595, 294255, 330471, 477347, 550785, 1432041, 1652355, 2386735, 4296123, 7160205, 21480615]

約数ペア:

[(1, 21480615), (3, 7160205), (5, 4296123), (9, 2386735), (13, 1652355), (15, 1432041), (39, 550785), (45, 477347), (65, 330471), (73, 294255), (117, 183595), (195, 110157), (219, 98085), (365, 58851), (503, 42705), (585, 36719), (657, 32695), (949, 22635), (1095, 19617), (1509, 14235), (2515, 8541), (2847, 7545), (3285, 6539), (4527, 4745)]