28342540

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{3643}}^1$

素因数の和:4041

約数の個数: 24

約数和(自身を含む): 59688720

約数和(自身を除く): 31346180

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3643, 3890, 7286, 7780, 14572, 18215, 36430, 72860, 1417127, 2834254, 5668508, 7085635, 14171270, 28342540]

約数ペア:

[(1, 28342540), (2, 14171270), (4, 7085635), (5, 5668508), (10, 2834254), (20, 1417127), (389, 72860), (778, 36430), (1556, 18215), (1945, 14572), (3643, 7780), (3890, 7286)]