20804745

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{283}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 37419840

約数和(自身を除く): 16615095

約数列:

[1, 3, 5, 13, 15, 29, 39, 65, 87, 145, 169, 195, 283, 377, 435, 507, 845, 849, 1131, 1415, 1885, 2535, 3679, 4245, 4901, 5655, 8207, 11037, 14703, 18395, 24505, 24621, 41035, 47827, 55185, 73515, 106691, 123105, 143481, 239135, 320073, 533455, 717405, 1386983, 1600365, 4160949, 6934915, 20804745]

約数ペア:

[(1, 20804745), (3, 6934915), (5, 4160949), (13, 1600365), (15, 1386983), (29, 717405), (39, 533455), (65, 320073), (87, 239135), (145, 143481), (169, 123105), (195, 106691), (283, 73515), (377, 55185), (435, 47827), (507, 41035), (845, 24621), (849, 24505), (1131, 18395), (1415, 14703), (1885, 11037), (2535, 8207), (3679, 5655), (4245, 4901)]