64839987

素因数分解:

$3^3\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{491}}^1$

素因数の和:640

約数の個数: 32

約数和(自身を含む): 99029760

約数和(自身を除く): 34189773

約数列:

[1, 3, 9, 27, 67, 73, 201, 219, 491, 603, 657, 1473, 1809, 1971, 4419, 4891, 13257, 14673, 32897, 35843, 44019, 98691, 107529, 132057, 296073, 322587, 888219, 967761, 2401481, 7204443, 21613329, 64839987]

約数ペア:

[(1, 64839987), (3, 21613329), (9, 7204443), (27, 2401481), (67, 967761), (73, 888219), (201, 322587), (219, 296073), (491, 132057), (603, 107529), (657, 98691), (1473, 44019), (1809, 35843), (1971, 32897), (4419, 14673), (4891, 13257)]